#controls {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    margin: 0.5em auto;
    color: wheat;
    display: flex;
    flex-direction: column;
    max-width: 90%;
    justify-content: center;
    align-items: center;
}
#controls>* {
    margin: 0.25em 0;
}

#predefspeed span,
.btncontrol span {
    pointer-events: none;
}


#predefspeed, 
#controlbtns {
    display: flex;
    flex-wrap: wrap;
}

#controlbtns input+label {
    min-width: 5em;
    padding: 0.5em 1em;
    margin: 0 1em;
    border: 0.05em solid lightblue;
}
#predefspeed input+label {
    min-width: 4em;
    padding: 0.1em 0.25em;
    margin: 0 1em;
    font-size: 0.8em;
    border: 0.05em solid wheat;
}

#predefspeed input+label,
#controlbtns input+label {
    text-align: center;
    display: block;
    border-radius: 0.5em;
    background-color: black;
    cursor: pointer;
    transition: 0.2s all linear;
}
#predefspeed input+label:hover, 
#controlbtns input+label:hover {
    color: black;
    background-color: wheat; 
}
#controlbtns input,
#predefspeed input {
    display: none;
}
#predefspeed input:checked+label,
#controlbtns input:checked+label {
    color: black;
    background-color: wheat;
}
#predefspeed input+label span,
#controlbtns input+label span {
    pointer-events: none;
}
#predefspeed input+label>span::selection,
#controlbtns input+label>span::selection {
    color: inherit;
    background-color: inherit;
}