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var rough=function(){"use strict";function a(){return{LEFT:0,RIGHT:1,INTERSECTS:2,AHEAD:3,BEHIND:4,SEPARATE:5,UNDEFINED:6}}var b=Math.tan,c=Math.pow,d=Math.cos,e=Math.sin,f=Math.PI,g=Math.sqrt,h=Math.max,j=Math.min,i=Math.abs,k=Number.MAX_VALUE;class l{constructor(b,c,d,e){this.RoughSegmentRelationConst=a(),this.px1=b,this.py1=c,this.px2=d,this.py2=e,this.xi=k,this.yi=k,this.a=e-c,this.b=b-d,this.c=d*c-b*e,this._undefined=0==this.a&&0==this.b&&0==this.c}isUndefined(){return this._undefined}compare(d){if(this.isUndefined()||d.isUndefined())return this.RoughSegmentRelationConst.UNDEFINED;var 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o=this._bezierTo(l,m,h,i,j,k,a,d);e=e.concat(o),a.bezierReflectionPoint=[j+(j-h),k+(k-i)]}break}case"Q":case"q":{const c="q"===b.key;if(4<=b.data.length){let g=+b.data[0],h=+b.data[1],i=+b.data[2],j=+b.data[3];c&&(g+=a.x,i+=a.x,h+=a.y,j+=a.y);let k=1*(1+.2*d.roughness),l=1.5*(1+.22*d.roughness);e.push({op:"move",data:[a.x+this._getOffset(-k,k,d),a.y+this._getOffset(-k,k,d)]});let m=[i+this._getOffset(-k,k,d),j+this._getOffset(-k,k,d)];e.push({op:"qcurveTo",data:[g+this._getOffset(-k,k,d),h+this._getOffset(-k,k,d),m[0],m[1]]}),e.push({op:"move",data:[a.x+this._getOffset(-l,l,d),a.y+this._getOffset(-l,l,d)]}),m=[i+this._getOffset(-l,l,d),j+this._getOffset(-l,l,d)],e.push({op:"qcurveTo",data:[g+this._getOffset(-l,l,d),h+this._getOffset(-l,l,d),m[0],m[1]]}),a.setPosition(m[0],m[1]),a.quadReflectionPoint=[i+(i-g),j+(j-h)]}break}case"T":case"t":{const h="t"===b.key;if(2<=b.data.length){let i=+b.data[0],j=+b.data[1];h&&(i+=a.x,j+=a.y);let k=i,l=j,m=c?c.key:"";var 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h&&(i?p.push({op:"move",data:[a+this._getOffset(-l,l,f),b+this._getOffset(-l,l,f)]}):p.push({op:"move",data:[a+this._getOffset(-k,k,f),b+this._getOffset(-k,k,f)]})),i?p.push({op:"bcurveTo",data:[n+a+(d-a)*m+this._getOffset(-l,l,f),o+b+(e-b)*m+this._getOffset(-l,l,f),n+a+2*(d-a)*m+this._getOffset(-l,l,f),o+b+2*(e-b)*m+this._getOffset(-l,l,f),d+this._getOffset(-l,l,f),e+this._getOffset(-l,l,f)]}):p.push({op:"bcurveTo",data:[n+a+(d-a)*m+this._getOffset(-k,k,f),o+b+(e-b)*m+this._getOffset(-k,k,f),n+a+2*(d-a)*m+this._getOffset(-k,k,f),o+b+2*(e-b)*m+this._getOffset(-k,k,f),d+this._getOffset(-k,k,f),e+this._getOffset(-k,k,f)]}),p}_curve(a,c,d){const e=a.length;let f=[];if(3<e){const g=[],b=1-d.curveTightness;f.push({op:"move",data:[a[1][0],a[1][1]]});for(let c=1;c+2<e;c++){const 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m.push([this._getOffset(-i,i,k)+b+g*d(l+2*f+.5*j),this._getOffset(-i,i,k)+c+h*e(l+2*f+.5*j)]),m.push([this._getOffset(-i,i,k)+b+.98*g*d(l+j),this._getOffset(-i,i,k)+c+.98*h*e(l+j)]),m.push([this._getOffset(-i,i,k)+b+.9*g*d(l+.5*j),this._getOffset(-i,i,k)+c+.9*h*e(l+.5*j)]),this._curve(m,null,k)}_curveWithOffset(a,b,c){const d=[[a[0][0]+this._getOffset(-b,b,c),a[0][1]+this._getOffset(-b,b,c)],[a[0][0]+this._getOffset(-b,b,c),a[0][1]+this._getOffset(-b,b,c)]];for(let e=1;e<a.length;e++)d.push([a[e][0]+this._getOffset(-b,b,c),a[e][1]+this._getOffset(-b,b,c)]),e===a.length-1&&d.push([a[e][0]+this._getOffset(-b,b,c),a[e][1]+this._getOffset(-b,b,c)]);return this._curve(d,null,c)}_arc(a,b,c,f,g,h,i,j,k){const l=h+this._getOffset(-.1,.1,k),m=[];m.push([this._getOffset(-j,j,k)+b+.9*f*d(l-a),this._getOffset(-j,j,k)+c+.9*g*e(l-a)]);for(let n=l;n<=i;n+=a)m.push([this._getOffset(-j,j,k)+b+f*d(n),this._getOffset(-j,j,k)+c+g*e(n)]);return m.push([b+f*d(i),c+g*e(i)]),m.push([b+f*d(i),c+g*e(i)]),this._curve(m,null,k)}_getIntersectingLines(b,c,d){let e=[];for(var f=new l(b[0],b[1],b[2],b[3]),g=0;g<c.length;g++){let b=new l(c[g],d[g],c[(g+1)%c.length],d[(g+1)%c.length]);f.compare(b)==a().INTERSECTS&&e.push([f.xi,f.yi])}return e}}self._roughScript=self.document&&self.document.currentScript&&self.document.currentScript.src;class t{constructor(a,b){this.config=a||{},this.canvas=b,this.defaultOptions={maxRandomnessOffset:2,roughness:1,bowing:1,stroke:"#000",strokeWidth:1,curveTightness:0,curveStepCount:9,fill:null,fillStyle:"hachure",fillWeight:-1,hachureAngle:-41,hachureGap:-1},this.config.options&&(this.defaultOptions=this._options(this.config.options))}_options(a){return a?Object.assign({},this.defaultOptions,a):this.defaultOptions}_drawable(a,b,c){return{shape:a,sets:b||[],options:c||this.defaultOptions}}get lib(){if(!this._renderer)if(self&&self.workly&&this.config.async&&!this.config.noWorker){const a=Function.prototype.toString,b=this.config.worklyURL||"https://www.h5bk.com",c=this.config.roughURL||self._roughScript;if(c&&b){let a=`importScripts('${b}', '${c}');\nworkly.expose(self.rough.createRenderer());`,d=URL.createObjectURL(new Blob([a]));this._renderer=workly.proxy(d)}else this._renderer=new s}else this._renderer=new s;return this._renderer}line(a,b,c,d,e){const f=this._options(e);return this._drawable("line",[this.lib.line(a,b,c,d,f)],f)}rectangle(a,b,c,d,e){const f=this._options(e),g=[];if(f.fill){const e=[a,a+c,a+c,a],h=[b,b,b+d,b+d];"solid"===f.fillStyle?g.push(this.lib.solidFillShape(e,h,f)):g.push(this.lib.hachureFillShape(e,h,f))}return g.push(this.lib.rectangle(a,b,c,d,f)),this._drawable("rectangle",g,f)}ellipse(a,b,c,d,e){const f=this._options(e),g=[];if(f.fill)if("solid"===f.fillStyle){const e=this.lib.ellipse(a,b,c,d,f);e.type="fillPath",g.push(e)}else g.push(this.lib.hachureFillEllipse(a,b,c,d,f));return g.push(this.lib.ellipse(a,b,c,d,f)),this._drawable("ellipse",g,f)}circle(a,b,c,d){let e=this.ellipse(a,b,c,c,d);return e.shape="circle",e}linearPath(a,b){const c=this._options(b);return this._drawable("linearPath",[this.lib.linearPath(a,!1,c)],c)}polygon(a,b){const c=this._options(b),d=[];if(c.fill){let b=[],e=[];for(let c of a)b.push(c[0]),e.push(c[1]);"solid"===c.fillStyle?d.push(this.lib.solidFillShape(b,e,c)):d.push(this.lib.hachureFillShape(b,e,c))}return d.push(this.lib.linearPath(a,!0,c)),this._drawable("polygon",d,c)}arc(a,b,c,d,e,f,g,h){const i=this._options(h),j=[];if(g&&i.fill)if("solid"===i.fillStyle){let g=this.lib.arc(a,b,c,d,e,f,!0,!1,i);g.type="fillPath",j.push(g)}else j.push(this.lib.hachureFillArc(a,b,c,d,e,f,i));return j.push(this.lib.arc(a,b,c,d,e,f,g,!0,i)),this._drawable("arc",j,i)}curve(a,b){const c=this._options(b);return this._drawable("curve",[this.lib.curve(a,c)],c)}path(a,b){const c=this._options(b),e=[];if(!a)return 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v{constructor(a,b){this.canvas=a,this.ctx=this.canvas.getContext("2d"),this._init(b)}_init(a){this.gen=new t(a,this.canvas)}get generator(){return this.gen}static createRenderer(){return new s}line(a,b,c,e,f){let g=this.gen.line(a,b,c,e,f);return this.draw(g),g}rectangle(a,b,c,e,f){let g=this.gen.rectangle(a,b,c,e,f);return this.draw(g),g}ellipse(a,b,c,e,f){let g=this.gen.ellipse(a,b,c,e,f);return this.draw(g),g}circle(a,b,c,e){let f=this.gen.circle(a,b,c,e);return this.draw(f),f}linearPath(a,b){let c=this.gen.linearPath(a,b);return this.draw(c),c}polygon(a,b){let c=this.gen.polygon(a,b);return this.draw(c),c}arc(a,b,c,e,f,g,h,i){let j=this.gen.arc(a,b,c,e,f,g,h,i);return this.draw(j),j}curve(a,b){let c=this.gen.curve(a,b);return this.draw(c),c}path(a,b){let c=this.gen.path(a,b);return this.draw(c),c}draw(a){let b=a.sets||[],c=a.options||this.gen.defaultOptions,d=this.ctx;for(let e of 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b=c.data;switch(c.op){case"move":a.moveTo(b[0],b[1]);break;case"bcurveTo":a.bezierCurveTo(b[0],b[1],b[2],b[3],b[4],b[5]);break;case"qcurveTo":a.quadraticCurveTo(b[0],b[1],b[2],b[3]);break;case"lineTo":a.lineTo(b[0],b[1]);}}"fillPath"===b.type?a.fill():a.stroke()}}class w extends v{_init(a){this.gen=new u(a,this.canvas)}async line(a,b,c,e,f){let g=await this.gen.line(a,b,c,e,f);return this.draw(g),g}async rectangle(a,b,c,e,f){let g=await this.gen.rectangle(a,b,c,e,f);return this.draw(g),g}async ellipse(a,b,c,e,f){let g=await this.gen.ellipse(a,b,c,e,f);return this.draw(g),g}async circle(a,b,c,e){let f=await this.gen.circle(a,b,c,e);return this.draw(f),f}async linearPath(a,b){let c=await this.gen.linearPath(a,b);return this.draw(c),c}async polygon(a,b){let c=await this.gen.polygon(a,b);return this.draw(c),c}async arc(a,b,c,e,f,g,h,i){let j=await this.gen.arc(a,b,c,e,f,g,h,i);return this.draw(j),j}async curve(a,b){let c=await this.gen.curve(a,b);return this.draw(c),c}async path(a,b){let c=await this.gen.path(a,b);return this.draw(c),c}}var x={canvas(a,b){return b&&b.async?new w(a,b):new v(a,b)},createRenderer(){return v.createRenderer()},generator(a,b){return a&&a.async?new u(a,b):new t(a,b)}};return x}();
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<script type="text/javascript">
var extend = function extend(base) {
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    extensions[_key - 1] = arguments[_key];
  }
  return Object.assign.apply(Object, [{}, base].concat(extensions));
};
var parseColor = function parseColor(_ref) {
  var h = _ref.h,
      s = _ref.s,
      l = _ref.l,
      a = _ref.a;
  return 'hsla(' + h + ',' + s + '%,' + l + '%,' + a + ')';
};
var Color = extend.bind(null, { h: 0, s: 100, l: 100, a: 1 });
var Vector = extend.bind(null, { x: 0, y: 0 });
var Particle = extend.bind(null, {
  pos: Vector(),
  vel: Vector(),
  angle: 0,
  speed: 0,
  radius: 0,
  rotation: 0,
  color: Color()
});
var colors = [Color({ h: 20, s: 100, l: 50 }), Color({ h: 200, l: 50 }), Color({ h: 300, l: 50 }), Color({ h: 100, l: 40 })];
var animationLoop = function animationLoop(scope) {
  if (scope.animation) {
    scope.animation(animationLoop.bind(null, scope));
  }
  var ctx = scope.ctx;
  var canvas = ctx.canvas;
  var rc = rough.canvas(canvas);
  ctx.clearRect(0, 0, canvas.width, canvas.height);
  scope.particles.map(function (p, i) {
    p.pos.y -= p.speed;
    if (i % 2) {
      p.pos.x = p.pos.x + Math.sin(p.angle) * .2;
    } else {
      p.pos.x = p.pos.x - Math.cos(p.angle) * .2;
    }
    p.angle += .01;
    rc.circle(p.pos.x, p.pos.y, p.radius, {
      fill: parseColor(p.color),
      roughness: Math.random() * 1.5,
      hachureGap: p.hachureGap,
      hachureAngle: p.hachureAngle
    });
    rc.line(p.pos.x, p.pos.y + p.radius * 1.2, p.pos.x, p.pos.y + p.radius / 2, {
      bowing: Math.random() * 3
    });
    if (p.pos.y + p.radius * 3 < 0) {
      p.pos.y = canvas.height + p.radius * 3;
      p.pos.x = Math.random() * (canvas.width - p.radius);
    }
  });
};
var scope = {
  animation: requestAnimationFrame.bind(null),
  ctx: document.createElement('canvas').getContext('2d'),
  title: 'Brian Douglas',
  rotation: 0,
  particles: []
};
~function (scope) {
  var canvas = scope.ctx.canvas;
  var top = window.innerHeight;
console.log(top);
  canvas.width = window.innerWidth;
  canvas.height = top ;
  document.body.appendChild(canvas);
  var particleCount = 50;
  while (particleCount--) {
    scope.particles.push(Particle({
      pos: {
        x: Math.random() * canvas.width,
        y: Math.random() * canvas.height
      },
      speed: Math.random() + .2,
      radius: Math.random() * 60 + 20,
      color: colors[Math.floor(Math.random() * colors.length)],
      hachureAngle: Math.random() * 90,
      hachureGap: Math.random() * 8 + 1
    }));
  }
  animationLoop(scope);
}(scope);
if (!/Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent)) {
  window.addEventListener('resize', function () {
    scope.ctx.canvas.width = window.innerWidth;
    scope.ctx.canvas.height = window.innerHeight;
  });
}</script>

css

canvas {
    width: 100%;
    height:100%;
    position: absolute;
    top:60px;  
    z-index: 1;
   
}

.b2-content{
    z-index: 2;
    height: 100%;
}