body {
    background-color: gold;
}

button:not(.contactBtn) {
    font-size: 30px;
    padding: 10px 15px;
    border: solid 3px;
    border-radius: 12px;
    margin: 7px;
    box-shadow: 0 3px 15px darkblue;
}

button:not(.contactBtn):hover {
    background-color: white !important;
    transform: scale(1.1);
}

#b1 {
    background-color: #f66600;
}

#b2 {
    background-color: turquoise;
}

#b3 {
    background-color: violet;
}

#b4 {
    background-color: #43f037;
}

#b5 {
    background-color: #ff5151;
}

.contactBtn {
    color: white;
    background-color: darkblue;
    font-size: 30px;
    padding: 10px 15px;
    border: solid 3px;
    border-radius: 12px;
    margin: 7px;
    box-shadow: 0 3px 15px black;
    position: fixed;
    bottom: 20px;
    left: 88%;
    transform: translateX();
    z-index: 1000000;
}

.contactBtn:hover {
    background-color: black;
    transform: scale(1.1);
}