@import url(https://fonts.googleapis.com/css?family=Roboto:400,700);

@keyframes checked-anim {
  50% {
    width: 3000px;
    height: 3000px;
  }
  100% {
    width: 100%;
    height: 100%;
    border-radius: 0;
  }
}
@keyframes not-checked-anim {
  0% {
    width: 3000px;
    height: 3000px;
  }
}
li,
a {
  margin: 75px 0 -55px 0;
  color: #03a9f4;
  font: 14pt "Roboto", sans-serif;
  font-weight: 700;
  line-height: 1.8;
  text-decoration: none;
  text-transform: none;
  list-style: none;
  outline: 0;
  display: none;
}

li {
  width: 230px;
  text-indent: 56px;
}
a:focus {
  display: block;
  color: #333;
  background-color: #eee;
  transition: all 0.5s;
}
aside {
  position: absolute;
  color: white;
  top: 35%;
  right: 10%;
  text-align: right;
}
h1 {
  line-height: 0;
  font-size: 4vw;
  font-weight: 700;
}
h3 {
  float: right;
  line-height: 0.3;
  font-size: 2.5vw;
  font-weight: lighter;
}
h4 {
  float: left;
  margin-left: -2%;
  font-size: 1.5vw;
  font-weight: lighter;
} 
body {
  background-image: url("https://i.ibb.co/zfWP920/Mesa-de-trabajo-1.png");
  background-color: #cccccc;
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed;
   -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
  margin: 0;
  padding: 0;
  background-color: #03a9f4;
  font-family: "Roboto", sans-serif;
  overflow: hidden;
}

#trigger,
#burger,
#burger:before,
#burger:after {
  position: absolute;
  top: 0px;
  left: 0px;
  background: #03a9f4;
  width: 0px;
  height: 0px;
  transition: 0.2s ease;
  cursor: pointer;
  z-index: 1;
}
#trigger {
  height: 25px;
  background: none;
}
#burger:before {
  content: " ";
  top: 10px;
  left: 0;
}
#burger:after {
  content: " ";
  top: 0px;
  left: 0;
}
#menu-toggle:checked + #trigger + #burger {
  top: 35px;
  transform: rotate(180deg);
  transition: transform 0.2s ease;
}

#menu-toggle:checked + #trigger + #burger:before {
  width: 20px;
  top: -2px;
  left: 18px;
  transform: rotate(45deg) translateX(-5px);
  transition: transform 0.2s ease;
}
#menu-toggle:checked + #trigger + #burger:after {
  width: 20px;
  top: 2px;
  left: 18px;
  transform: rotate(-45deg) translateX(-5px);
  transition: transform 0.2s ease;
}
#menu {
  position: absolute;
  margin: 0;
  padding: 0;
  width: 0px;
  height: 0px;
  background-color: #fff;
  border-bottom-right-radius: 100%;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.26);
  animation: not-checked-anim 0.2s both;
  transition: 0.2s;
}
#menu-toggle:checked + #trigger + #burger + #menu {
  animation: checked-anim 1s ease both;
}
#menu-toggle:checked + #trigger ~ #menu > li,
a {
  display: block;
}
[type="checkbox"]:not(:checked),
[type="checkbox"]:checked {
  display: none;
}