body{
    background-color:steelblue;
    font-family:'Franklin Gothic Medium', 'Arial Narrow', Arial, sans-serif;
}

.main-logo{
    align-items: center;
}

h1{
    text-align: center;
    font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
    background-color: #333;
    color:greenyellow;
    border-style:solid;
    border-radius: 10px;
    border-width: 5px;
    border-color:#fff;
    padding:10px;
}


.left-block{
    text-align: center;
    background-color: #333;
    color:#fff;
    border-style:solid;
    border-radius: 10px;
    border-width: 5px;
    border-color:#121;
    padding:10px;
   
    float:left;
    height: 252px;
    width:30%;
    box-sizing: border-box;
}

.right-block{
    text-align: center;
    background-color: #333;
    color:#fff;
    border-style:solid;
    border-radius: 10px;
    border-width: 5px;
    border-color:#000;
    padding:10px;
 

    float:right;
    width: 70%;
    box-sizing: border-box;
}

.clr{
    clear:both;
}

#subsytems{
    text-align: center;
    font-family:Verdana, Geneva, Tahoma, sans-serif;
    background-color: #333;
    color:#fff;
    border-style:solid;
    border-radius: 10px;
    border-width: 5px;
    border-color:#000;
    padding:10px;
    margin: 10px;
  

}