.heater-bar {
    width: 100%;
    height: 50px;
    background-color: #665067;
    font-size: 40px;
    border-bottom: 3px solid black;
    box-shadow: 0 2px 6px rgba(0,0,0,0.5);
    margin-top: auto;
    border-radius: 2%;

}
body{
    margin: 0 auto;
}