.codingstyle {
    position: relative;
    display: inline-block;
    width: 100%;
}

.run-button {
    position: absolute;
    top: 0;
    right: 0;
    z-index: 1; 
    height: 35px;
    width: 65px;
    font-size: 18px;
    font-weight: bold;
    background-color: #000099;
    color: #fff;
    border: none;
    border-left: 2px solid white;
    border-bottom: 2px solid white;
    border-radius: 0 0 0 10px;
    box-shadow: 0 0 5px 1px white;
}

.run-button:active{
    height: 31.5px;
    width: 61.5px;
    font-size: 17px;
}