style.css

header {
    top: 0;
    left: 0;
    right: 0;
    display: block;
    z-index: 2000;
    background-color: #8d6e63;
    color: #fff;
}

.ontop {
    background-image: linear-gradient(180deg, hsla(0, 0%, 100%, .3), hsla(0, 0%, 100%, 0) 50%, rgba(0, 0, 0, .12) 51%, rgba(0, 0, 0, .04)) !important;
    flex-wrap: nowrap;
    display: flex;
    position: relative;
    padding: 0 12px;
    min-height: 50px;
    width: 100%;
    align-items: center;
}

.title {
    flex: 1 1 0%;
    min-width: 1px;
    max-width: 100%;
    font-size: 21px;
    font-weight: 500;
    letter-spacing: .01em;
    padding: 0 12px;
    text-overflow: ellipsis;
    white-space: nowrap;
    overflow: hidden;
}

.btn {
    -webkit-appearance: button;
    padding: 0 12px;
    right: 20px;
    height: 2em;
    width: 2em;
    min-height: 2em;
    min-width: 2em;
    border-radius: 50%;
    position: relative;
    outline: 0;
    border: 0;
    vertical-align: middle;
    cursor: pointer;
    font-size: 14px;
    line-height: 1.718em;
    text-decoration: none;
    color: black;
    transition: .3s cubic-bezier(.25, .8, .5, 1);
    font-weight: 500;
    align-items: flex-start;
    text-align: center;
    -webkit-user-drag: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
}

.marker {
    display: inline;
    max-width: 5em;
    max-height: 5em;
}