.hambermenu {
    position: relative; 
    height: 50px;
}
.nav-trigger {
    position: absolute; 
    top: 50%;
    margin-top: -15px;
    display: inline-block;
    border-radius: 55px;
    width: 50px;
    height: 50px;
    cursor: pointer;
    z-index: 200;
    -webkit-transform-origin: 10px 10px;
    -moz-transform-origin: 10px 10px;
    -ms-transform-origin: 10px 10px;
    -o-transform-origin: 10px 10px;
    transform-origin: 10px 10px;
    -webkit-transform: scale(0.6);
    -moz-transform: scale(0.6);
    -ms-transform: scale(0.6);
    -o-transform: scale(0.6);
    transform: scale(0.6);
    -webkit-transition: background 0.3s linear;
    -moz-transition: background 0.3s linear;
    transition: background 0.3s linear;
}

.nav-trigger.open {
}

.nav-trigger.close {
    background: transparent;
    opacity: 0.9;
}

.line {
    display: block;
    position: absolute;
    width: 58px;
    height: 3px;
    background: #fff;
    -webkit-transform-origin: 0px 4px;
    -moz-transform-origin: 0px 4px;
    -ms-transform-origin: 0px 4px;
    -o-transform-origin: 0px 4px;
    transform-origin: 0px 4px;
    -webkit-transition: opacity 0.3s cubic-bezier(0.645, 0.045, 0.355, 1) 0s, -webkit-transform 0.24s cubic-bezier(0.645, 0.045, 0.355, 1) 0s;
    -moz-transition: opacity 0.3s cubic-bezier(0.645, 0.045, 0.355, 1) 0s, -moz-transform 0.24s cubic-bezier(0.645, 0.045, 0.355, 1) 0s;
    transition: opacity 0.3s cubic-bezier(0.645, 0.045, 0.355, 1) 0s, transform 0.24s cubic-bezier(0.645, 0.045, 0.355, 1) 0s;
}

.line:nth-child(1) {
    top: 3px;
}

.line:nth-child(2) {
    top: 17px;
}

.line:nth-child(3) {
    top: 30px;
}

.close .line:nth-child(1) {
    -webkit-transform: translate(4px, -7px) rotate(45deg);
    -moz-transform: translate(4px, -7px) rotate(45deg);
    -ms-transform: translate(4px, -7px) rotate(45deg);
    -o-transform: translate(4px, -7px) rotate(45deg);
    transform: translate(4px, -7px) rotate(45deg);
}

.close .line:nth-child(2) {
    opacity: 0;
}

.close .line:nth-child(3) {
    -webkit-transform: translate(7px, 6px) rotate(-45deg);
    -moz-transform: translate(7px, 6px) rotate(-45deg);
    -ms-transform: translate(7px, 6px) rotate(-45deg);
    -o-transform: translate(7px, 6px) rotate(-45deg);
    transform: translate(7px, 6px) rotate(-45deg);
}