.tab {
    margin-left: -4px;
}

.tabcontent {
    border-top-width: 0px;
    border-top-style: solid;
    padding-top:      4px;
    padding-left:     4px;
    padding-right:    4px;
    padding-bottom:   4px;
    width:            800px;
    border-radius: 6px;
}