body {
    padding: 20px;
    background-color: #d9d9d9;
}

#gridContainer {
    padding-bottom: 10px;
}

span {
    color: #222;
}

#start,
#clear,
#random,
#fps_up,
#fps_down,
#one_update{
    margin: 10px;
    font-family: "Arial Black", Gadget, sans-serif;
    font-size: 10px;
    padding: 10px;
    text-align: center;
    text-transform: uppercase;
    transition: 0.5s;
    background-size: 200% auto;
    color: #FFF;
    box-shadow: 0 0 10px #eee;
    border-radius: 5px;
    width: 100px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
    transition: all 0.3s cubic-bezier(.25,.8,.25,1);
    cursor: pointer;
    display: inline-block;
    border-radius: 20px;
}