hr{
    margin-top: 1.25em;
    margin-bottom: 1.25em;
    border-color: #EC7357;
}

#header img{
    border-radius: 8px;
    display: block;
    margin-left: auto;
    margin-right: auto;
    margin-top: 0px;
    width: 100%; 
}

#header h1{
    font-family: 'Source Code Pro', 'Roboto', monospace; 
    color: #EC7357; 
    text-align: center;
    font-size: 2.5em;
}

body{
    font-family: 'Roboto', monospace;
    background-color: #FDD692; 
    color: #754F44;
    padding: 20px;
    margin: 5px 250px auto 250px; 
    margin: 0.5em 10em auto 10em;
    font-size: 1.1em;
} 

/* TABLE STYLING */

#ptable{
    margin-left: -20px;
    width: 100%;
    table-layout: fixed;
   /* empty-cells: hide; */
}

#ptable td, th{
    width: 45px;
    height: 45px;
    vertical-align: middle;
    text-align: center;
    font-weight: bolder;
    border: 1px solid rgb(77, 71, 69); 
}

#ptable td:hover{
    background-color: #FBFFB9;
    cursor: pointer;
}

/* FORMATTING FOR THE CAPTIONS */

#per_num{
    font-size: 0.75em;
    border: none;
    cursor: default;
}

#group_num{
    font-size: 0.75em;
    border: none;
    cursor: default;
}

#empty{
    border: none;
    cursor: default;
}

/* COLORS FOR TABLE KEY */

#key-sect{
    border: none;
    font-size: 0.85em;
    line-height: 1.75em;
}

#key{
    border: 1px solid rgb(77, 71, 69); 
    padding: 3px;
}

#alkali-metal-key{
    background-color: rgb(250, 151, 118);
}

#alkaline-earth-metal-key{
    background-color: rgb(248, 179, 179);
}

#lanthanide-key{
    background-color: #79EAA1;
}

#actinide-key{
    background-color: #8EABEA;
}

#transition-metal-key{
    background-color: #FFB858;
}

#post-transition-metal-key{
    background-color: #FFF06A;
}

#metalloid-key{
    background-color: #C8B5EA;
}

#non-metal-key{
    background-color: rgb(223, 245, 99);
}

#noble-gas-key{
    background-color: #B5EAD7;
}

#unknown-key{
    background-color: rgb(233, 233, 233);
}

/* COLORS FOR ELEMENT TYPES */

#non-metal{
    background-color: rgb(223, 245, 99);
}

#noble-gas{
    background-color: #B5EAD7;
}

#metalloid{
    background-color: #C8B5EA;
}

#post-transition-metal
{
    background-color: #FFF06A;
}

#transition-metal{
    background-color: #FFB858;
}

#alkaline-earth-metal{
    background-color: rgb(248, 179, 179);
}

#alkali-metal{
    background-color: rgb(250, 151, 118);
}

#lanthanide{
    background-color: #79EAA1;
}

#actinide{
    background-color: #8EABEA;
}

#unknown{
    background-color: rgb(233, 233, 233);
}

/* FOOTER */

#footer ul{
    
    margin: 0px auto 0px auto;
    text-align: center;
}

#footer li{
    display: inline;
    margin: 0px 5px;
}

#footer a{
    color: #754F44;
    text-decoration: none;
    font-weight: bolder;
}

#footer a:hover{
    color: #EC7357;
}