html,
body {
    height: 100%;
    margin: 0;
    padding: 0;
}

#map {
    height: 100%;
}
.feature-btn {
    background: none rgb(255, 255, 255);
    margin: 10px;
    position: absolute;
    right: 0;
    cursor: pointer;
    caret-color: transparent;
    border-radius: 2px;
    height: 40px;
    width: 40px;
    box-shadow: rgba(0, 0, 0, 0.3) 0px 1px 4px -1px;
    overflow: hidden;
    text-align: center;
    box-sizing: border-box;
    padding-top: 20px;
	  z-index: 90;
}
.feature-btn i {
    font-size: 20px;
    color: #000;
    opacity: .6;
    top: 50%;
    transform: translateY(-50%);
}
.feature-btn:hover i {
    opacity: 1;
}
#map_btn {
    top: 50px;
}
#sat_view_btn {
    top: 100px;
}
#directions_btn, #return_btn {
    top: 150px;
    display: none;
}