th{
    border-bottom: 2pt solid black;
    height: 40px;
}
tr{
    height: 40px;
}
.tableShowSem:hover{
    border: 2px solid black;
}
.feita:hover,
.showSem:hover,
.calcmed:hover,
.row:hover{
    background-color:#c2c0c0 !important; 
}
#dis{
    height:50vh;
    width: 90vw;
    margin-left: 5vw;
}
table{
    border-collapse: collapse;
    margin-left: 10vw;
    width: 80vw
}
#mainHead{
    text-align: left;
}
tr:nth-child(even) {
    background-color: #e5e5e5;
    -webkit-column-break-after: 0px;
}
.feita,
.showSem,
.colum{
    align-items: center;
    text-align: center;
}
.calcmed{
    align-items: center;
    text-align: center;
    font-size: larger;
}
#navdiv{ 
    margin-top: 30px;
    position: inline-block; 
    align-items: center; 
    text-align: center; 
    margin-left: 10vw;
    width: 80vw;
} 
#navdiv span button{
    margin-left: .25rem;
    margin-right: .25rem;
    display:inline-block;
    text-align:center;
    vertical-align:middle;
    background-color:rgb(185, 209, 236);
    border: 2px solid black;
    padding: .375rem 2rem;
    font-size:1.9rem;
    border-radius:.25rem;
}
#navdiv span button:hover{
    background-color:rgb(207, 207, 207);
}

#left{float: left; } 
#center{ text-align: center; } 
#right{float: right; }