h1,h2,h3,h4,h5,h6,p {
    font-family: "Times New Roman";
}

h1,h2,h3 {
    text-align: center;
}
.div-center {
    width: 50%;
    height: auto;
    margin: 0 auto;
    padding: 10px;
    position: relative;
}
.text-center {
    text-align: center;
}
.button-center {
    position:relative;
    left: 50%;
    -ms-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
}
.hidden {
    display: none;
}
a {
    color: #0066CC;
    text-decoration: underline;
    cursor: pointer;
}

body {
    display:flex;
    justify-content:center;
    align-items: center;
}

#game-container {
    padding: 70px 0;

    display: none;
    grid-template-columns: 300px 700px 300px;
    grid-template-rows: 75px;
    grid-column-gap: 15px;
    grid-row-gap: 0px; 
}

.control-panel {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: 75px repeat(2, 20rem);
    grid-column-gap: 10px;
    grid-row-gap: 10px;
}
    
.control-panel > div { border: 1px solid; padding: 5px;}
.control-panel > .header { grid-area: 1 / 1 / 2 / 3; }
.control-panel > .tl { grid-area: 2 / 1 / 3 / 2; }
.control-panel > .tr { grid-area: 2 / 2 / 3 / 3; }
.control-panel > .bl { grid-area: 3 / 1 / 4 / 2; }
.control-panel > .br { grid-area: 3 / 2 / 4 / 3; } 
    
#game-container > #header { grid-area: 1 / 1 / 2 / 4;  } 
#game-container > #topbar { grid-area: 2 / 3 / 3 / 4; } 
#game-container > #botbar { grid-area: 3 / 3 / 4 / 4; }
#game-container > #game { grid-area: 2 / 2 / 4 / 3; } 
#game-container > #message-log { grid-area: 2 / 1 / 4 / 2; } 
hr {
    min-width: 100%;
}