.header {
    position: sticky;
    top: 0;
    height: 3rem;
    color: #ffffff;
    background-color: rgb(123 123 123 / 90%);
    font-size: 18px;
    z-index: 10;
    -webkit-transition: padding-left .3s ease-out;
    transition: padding-left .3s ease-out;
}
.header #toggle-sidebar {
    left: 0px;
    background-color: #fff;
    border: none;
    border-radius: 50%;
    padding: 0.2rem 0.5rem;
    position: relative;
    -webkit-transition: all .3s ease-out;
    transition: all .3s ease-out;
}
.header > div > span {
    width: 75vw;
    white-space: nowrap;
    margin-right: 1rem;
    overflow: auto;
    text-overflow: ellipsis;
}
@media (max-width: 620px){
    .wrapper.toggled .header #toggle-sidebar {
        left: 14rem;
    }
}
@media only screen and (max-width: 557px){
    .header select {
        margin-right: 2rem;
    }
}
@media only screen and (min-width: 558px){
    .header select {
        margin-right: 1rem;
    }
}