.nav_container{
 margin-top: 3%;
 margin-right: 10%;
 flex-basis: 100%;

}

nav {
 position: relative;
  padding-bottom: 12px;
   float: right;
}

nav .line {

  height: 2px;
  position: absolute;
  bottom: 0;
  margin: 10px 0 0 0;
  background: #A80410;
}

nav ul {
  padding: 0;
  margin: 0;
  list-style: none;
  display: flex;
}

nav ul li {
  margin: 0 40px 0 0;
  opacity: .4;
  transition: all 0.4s ease;
}

nav ul li:hover {
  opacity: .7;
}

nav ul li.active {
  opacity: 1;
}

nav ul li:last-child {
  margin-right: 0;
}

nav ul li a {
  font-family: "Oswald";
  text-decoration: none;
  color: #000;
  display: block;
  font-weight: 600;
  /*letter-spacing: .2em;*/
  font-size: 1.2em;

}


.filter{
    position: relative;
    background-color: #fff;
    padding: 20px;
    transition: 0.5s;
    border-radius: 1px;
    overflow: hidden;
    /*box-shadow: 0 8px 15px rgba(0,0,0,.2);*/
    float: left;
    left:5%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.menu {
  display: flex;
    margin: 0;
    padding: 0;
   width: 0px;
    overflow: hidden;
    transition: 0.5s;
    justify-content: center;
    align-items: center;
}


.menu li {
    list-style: none;
    margin: 0 10px;
}

.menu li a {
    text-decoration: none;
    color: #666;
    text-transform: uppercase;
    font-family: "Oswald";
    font-weight: 200;
    font-size: 0.7em;
    transition: 0.5s;
}

.menu li a:hover {
    color: #161919;
}

.filter input {
    width: 40px;
    height: 40px;
    cursor: pointer;
    opacity: 0;
}

.filter span {
    position: absolute;
    left: 10px;
    height: 4px;
    border-radius: 50px;
    background-color: #666;
    pointer-events: none;
    transition: 0.5s;
}

#s1{
     width: 20px;
}

#s2{
     width: 5px;
}

#s3{
     width: 10px;
}


.filter input:checked ~ span {
    background-color: #f974a1;
}

.filter span:nth-child(2) {
    transform: translateY(-8px);
}

.filter input:checked ~ span:nth-child(2) {
    transform: translateY(0) rotate(-45deg);
}
.filter span:nth-child(3) {
    transform: translateY(8px);
}

.filter input:checked ~ span:nth-child(3) {
    transform: translateY(0) rotate(45deg);
}