*
{
 margin: 0;
 padding: 0;
 box-sizing: content-box;
}


body {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  width: 100%;
  transition: 0.5s;
  overflow: hidden;
}
.overlay {
  height: 200vw;
  width: 200vw;
  border-radius: 50%;
  /*background: #000;*/
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
.nav {
  background: white;
  padding: 22px 45px;
  border-radius: 15px;
  box-shadow: 3px 3px 15px rgba(179, 179, 179, 0.185);
  position: relative;
  z-index: 1000;
}
.tabs {
  display: flex;
  width: 430px;
  justify-content: space-around;
  list-style-type: none;
}
.tab 
{
  padding: 13px 23px;
  background: #e0efff;
  color: #58a6ff;
  margin-right: 15px;
  border-radius: 55px;
  text-align: center;
  white-space: nowrap;
  transition: 0.3s ease;
  overflow: hidden;
  max-width: 0px;
  cursor: pointer;
  position: relative;
  flex-basis: 120px;
}
.tab_is-active {
  max-width: 100px;
  box-shadow: 7px 7px 15px rgba(124, 124, 124, 0.096);
}
.tab_is-active .tab_name {
  opacity: 1;
}
.tab_circle 
{
  position: absolute;
  height: 20px;
  width: 20px;
  border-radius: 50%;
  border: 2px solid #58a6ff;
  z-index: 10;
  opacity: 0;
  left: 30px;
  pointer-events: none;
}
.tab_icon 
{
  margin-right: 1px;
  font-size: 20px;
  vertical-align: middle;
  position: relative;
  right: 7.7px;
    top: 0px;
}
.tab_name 
{
  font-family: 'Ubuntu', sans-serif;
  font-size: 15px;
  font-weight: 500;
  position: relative;
  transition: 0.3s ease;
  top: 1px;
  opacity: 0;
}
.tab_github 
{
  background: #cfffd7;
  color: #4CAF50;
}
.tab_youtube {
  background: #fccfcf;
    color: #F44336;
}
.tab_dribbble {
  background: #ffddeb;
  color: #de4383;
}
.tab_fb {
  background: #d0e8fb;
    color: #0b8ef7;
}