style.css

ul {
    width: 220px;
    list-style-type: none;
    background-color:rgba(223, 84, 69, 0.8);
    border-bottom: dashed 1px #ffffff;
    padding-left: 0px;
}

li a{
    color: #fff;
    text-shadow: 1px 1px 3px #000;
}

li {
    height: 33px;
    padding-top: 10px;
    padding-left: 20px;
    border-bottom: dashed 1px #ffffff;
    margin-left: 0px;
    padding-right: 20px;
}

#tweet {
    width: 180px;
    padding: 20px;
    background-color:rgba(223, 84, 69, 0.8);
}

.main {
    width: 990px;
    margin: auto;
}