#slider {
   margin: 0 auto 5vw auto;
   width: 56rem;
   max-width: 100%;
   text-align: center;
}
#slider input[type=radio] {
   display: none;  
}
#slider label {
   cursor:pointer;
   text-decoration: none;
}

#overflow {
   width: 100%;
   overflow: hidden;
   border-radius: 0.6vw;
}

#slide1:checked ~ #slides .inner {
   margin-left: 0;
}
#slide2:checked ~ #slides .inner {
   margin-left: -100%;
}
#slide3:checked ~ #slides .inner {
   margin-left: -200%;
}
#slide4:checked ~ #slides .inner {
   margin-left: -300%;
}

#slides .inner {
   transition: margin-left 800ms cubic-bezier(0.770, 0.000, 0.175, 1.000);
   width: 400%;
   line-height: 0;
   height: 31rem;
}
#slides .slide {
   width: 25%;
   float:left;
   display: flex;
   justify-content: center;
   align-items: center;
   height: 100%;
   color: #fff;
}

#controls {
   margin: -180px 0 0 0;
   width: 100%;
   height: 50px;
   z-index: 3;
   position: relative;
}

#controls label {
   transition: opacity 0.2s ease-out;
   display: none;
   width: 30px;
   height: 30px;
   opacity: .8;
   border: solid var(--font-icon-color);
   border-width: 0 3px 3px 0;
   /* display: inline-block; */
   padding: 3px;
}
#controls label:hover {
   opacity: 1;
}
#slide1:checked ~ #controls label:nth-child(2),
#slide2:checked ~ #controls label:nth-child(3),
#slide3:checked ~ #controls label:nth-child(4),
#slide4:checked ~ #controls label:nth-child(1) {
  transform: rotate(-45deg);
 -webkit-transform: rotate(-45deg);
  float:right;
  margin: -80px -70px 0 0;
  display: block;
}

#slide1:checked ~ #controls label:nth-last-child(2),
#slide2:checked ~ #controls label:nth-last-child(3),
#slide3:checked ~ #controls label:nth-last-child(4),
#slide4:checked ~ #controls label:nth-last-child(1) {
  transform: rotate(135deg);
 -webkit-transform: rotate(135deg);
  float:left;
  margin: -80px 0 0 -70px;
  display: block;
}

#slide1:checked ~ #bullets label:nth-child(1),
#slide2:checked ~ #bullets label:nth-child(2),
#slide3:checked ~ #bullets label:nth-child(3),
#slide4:checked ~ #bullets label:nth-child(4) {
  background: rgb(125, 153, 184);
}

#bullets {
   margin: 150px 0 0;
   text-align: center;
}
#bullets label {
   display: inline-block;
   width: 10px;
   height: 10px;
   border-radius:100%;
   background:rgb(0, 0, 0);
   margin: 0 10px;
}