.sidebar-box {
    max-height: 120px;
    position: relative;
    overflow: hidden;
}

.sidebar-box .read-more { 
    position: absolute; 
    bottom: 0; 
    left: 0;
    width: 100%; 
    text-align: center; 
    margin: 0; 
    padding: 50px 0 25px;
    font-weight: bold;
    background: -moz-linear-gradient(top, transparent 0%, white 45%, white 100%);
    background: -webkit-linear-gradient(top, transparent 0%,white 45%,white 100%);
    background: linear-gradient(to bottom, transparent 0%,white 45%,white 100%);
}