.square {
    font-family: sans-serif;
}
.square,
ol li span {
    width: 50%;
    float: left;    
    box-sizing: border-box;
    -moz-box-sizing: border-box;
    -webkit-box-sizing: border-box;
}
.square,
ol {
    border: 2px solid black;
}
.square.top {
    color: white;
    text-align: center;
}
.square h1 {
    text-transform: uppercase;
    font-weight: bold;
    margin-top: 20px;
}
.square.top h1 {
    text-decoration: underline;
}
.square.bottom h1 {
    margin-left: 10px;
}
.square.top p {
    font-size: 5em;
    font-weight: bold;
}
.currently-open {
    background: yellowgreen;
}
.closed-today {
    background: DarkBlue;
}
ol {
   margin: 10px; 
}
ol,
ol li.header {
    overflow: auto;
}
ol li.header {
    font-weight: bold;
    border-bottom: 1px solid black;
}
ol li span {
    display: block;
}
ol li span + span {
    border-left: 2px solid black;
}