@import url(https://fonts.googleapis.com/css?family=Exo+2:400,900);
html {
  height: 100%;
  background: radial-gradient(circle, #B0DBF1 20%, #202A44);
  background-size: cover;
}

body {
  font-family: "Exo 2", sans-serif;
}

.generate {
  /* Remove button styles */
  border: none;
  background: transparent;
  outline: none;
  overflow: none;
  /* Make 'clickable' */
  cursor: pointer;
}

.number {
  text-shadow: 0 0 5px #bbb;
  /* Make it big */
  font-weight: 900;
  font-size: 250px;
  /* Center it */
  width: 50%;
  min-height: 50%;
  overflow: auto;
  margin: auto;
  position: absolute;
  top: 90px;
  left: 0;
  bottom: 0;
  right: 0;
}

.options {
  background-color: #202A44;
  border-radius: 5px;
  color: #efefef;
  padding: 10px 20px;
  position: absolute;
  cursor: pointer;
  margin-top: 20px;
}
.options input, .options label {
  display: none;
}
.options:hover input, .options:hover label {
  display: inline;
}
.options input {
  background-color: #efefef;
  padding: 10px;
  margin: 5px 15px;
}

.article{
color:white;
}


input[type='checkbox'] {
  display: none;
}
.wrap-collabsible {
  margin: 1.2rem 0;
}
.lbl-toggle {
  display: block;
  font-weight: bold;
  font-family:'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  font-size: 1.2rem;
  text-transform: none;
  text-align: center;
  padding: 1rem;
  color: #202A44;
  background: rgba(128, 128, 128, 0);
  cursor: pointer;
  border-radius: 7px;
  transition: all 0.25s ease-out;
}
.lbl-toggle:hover {
  color: #FFF;
}
.lbl-toggle::before {
  content: ' ';
  display: inline-block;
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
  border-left: 5px solid currentColor;
  vertical-align: middle;
  margin-right: .7rem;
  transform: translateY(-2px);
  transition: transform .2s ease-out;
}
.toggle:checked+.lbl-toggle::before {
  transform: rotate(90deg) translateX(-3px);
}
.collapsible-content {
  max-height: 0px;
  overflow: auto;
  transition: max-height .25s ease-in-out;
}
.toggle:checked + .lbl-toggle + .collapsible-content {
  max-height: 350px;
}
.toggle:checked+.lbl-toggle {
  border-bottom-right-radius: 0;
  border-bottom-left-radius: 0;
}
.collapsible-content .content-inner {
  background: grey(0, 105, 255, .2);
  border-bottom: 1px solid grey;
  border-bottom-left-radius: 7px;
  border-bottom-right-radius: 7px;
  padding: .5rem 1rem;
}
.collapsible-content p {
  margin-bottom: 0;
}