.hamburger{
  background-color: transparent;
  position: relative;
  display: none;
  width: 35px;
  cursor: pointer;
  appearance: none;
  background: none;
  outline: none;
  border: none;
}

.hamburger .bar, .hamburger:after, .hamburger:before{
  content: '';
  display: block;
  width: 100%;
  height: 1.5px;
  background-color: #fff;
  margin: 6px 0px;
  transition: 0.4s;
}
.hamburger.is-active:before{
  transform: rotate(-45deg) translate(-3px, 4px);
}
.hamburger.is-active:after{
  transform: rotate(45deg) translate(-7px, -7px);
}
.hamburger.is-active .bar{
  opacity: 0;
}
.mobile-nav{
  position: fixed;
  top: 0;
  bottom: 0;
  left: 100%;
  width: 80%;
  min-height: 100vh;
  background-color: #121921;
  padding: 40px 20px;
  transition: 0.4s;
  z-index: 9999999999999999999999999;
  border-right: 1.5px #fff dashed;
}
.mobile-nav.is-active{
  left: 0;
}

.mobile-nav a{
    text-decoration: none;
    display: block;
    width: 70%;
    padding: 12px 16px;
    text-align: left;
    margin: 10px 0px;
    transition: 0.4s;
    color: #fff; 
}
@media screen and (min-width: 550px) and (max-width:799px){
    .hamburger{
        display: block;
    }
}


@media screen and (min-width: 250px) and (max-width: 549px){
.hamburger{
    display: block;
}
}