div{
   position: absolute;
   text-align: center;
}

div#header {
   top: 10px;
   left: 20px;
   width: 900px;
}

div#clock {
   top: 70px;
   left: 20px;
}

div#stget {
   top: 260px;
   left: 20px;
}

div#domeslit {
   top: 225px;
   left: 20px;
}

div#filter {
   top: 555px;
   left: 20px;
}

div#flat {
   top: 640px;
   left: 20px;
}

div#det_temp {
   top: 720px;
   left: 20px;
}

div#weather {
   top: 70px;
   left: 540px;
}

div#last_exp {
   top: 500px;
   left: 540px;
}



th {
    width: 200px;
    padding: 8px;
    border: 2px #E3E3E3 solid;
    border-width: 0 0 2px 2px;
    background: #F5F5F5;
    font-size: 14px;
    font-weight: bold;
    text-align: center;
    white-space: nowrap;
}


td {
    width: 200px;
    padding: 8px;
    border: 2px #E3E3E3 solid;
    border-width: 0 0 2px 2px;
    font-size: 14px;
    font-weight: bold;
    text-align: center;
    white-space: nowrap;
}
td.td_yellow {
    background: #FFFF66;
}

td.td_pink {
    background: #FFC0CB;
}

td.td_aqua {
    background: #00FFFF;
}

td.td_grey {
    background: #D3D3D3;
}

td.td_white {
    background: #FFFFFF;
}

/*
 * table for clock
 * table for stget
 * table for domeslit
 * table for filter
 * table for flat
 * table for observer
 * table for exposure
 * table for dial
 */
table#tab-clock ,
table#tab-stget ,
table#tab-domeslit ,
table#tab-filter ,
table#tab-flat ,
table#tab-observer ,
table#tab-exposure {
    margin: 10px;
    border: 1px #E3E3E3 solid;
    border-collapse: collapse;
    border-spacing: 0;
}

/*
 * table for dither
 */
table#tab-dither {
    margin: 10px;
    border: 0px 
    border-collapse: collapse;
    border-spacing: 0;
}
table#tab-dither td.empty {
    width: 30px;
    padding: 8px;
    border: 0px;
    background: #FFFFFF;
}
table#tab-dither td.motor_off {
    width: 30px;
    padding: 8px;
    border: 2px #E3E3E3 solid;
    border-width: 2px;
    background: #F5F5F5;
}
table#tab-dither td.motor_on {
    width: 30px;
    padding: 8px;
    border: 2px #E3E3E3 solid;
    border-width: 2px;
    background: #FF00FF;
    font-size: 18px;
    font-weight: bold;
    text-align: center;
}





/*
 * table for temp
 */
table#tab-temp {
    margin: 10px;
    border: 1px #E3E3E3 solid;
    border-collapse: collapse;
    border-spacing: 0;
}