style.css

/* style="background-color: chartreuse; line-height: 10mm;" */
#logbody{
    background-color: #56baec;
}
#divlog{
    background-color: whitesmoke;
    width: 500px;
    height: 235px;
    margin: auto;
    margin-top: 190px;
    border-width: 3px;
    border-radius: 20px;
    border-style: solid;
    border-color:slategrey;
    text-align: center;
    box-shadow: 10px 15px 10px #277faf;
}
#divlog h3{
    color: #ee2553;
    font-family: Cambria, Cochin, Georgia, Times, 'Times New Roman', serif;
}
#logout{
    background-color: #ee2553;
    border-radius: 6px;
    margin-left: 1100px;
}
#logform input{
    padding: 6px;
    border-radius: 5px;
    text-align: center;
    width: 50%;
    margin-bottom: 10px;
    box-shadow: 5px 5px 10px #360216;
}
#logform input:hover{
    background-color: rgb(236, 227, 227);
}


#logbtn{
    margin-top: 9px;
    background-color: #56baec;
    width: 15%;
    border-radius: 5px;
    border-color: turquoise;
    color: white;
    box-shadow: 2px 3px 5px #277faf;
}

#logbtn:hover{
    background-color: #2795cc;
}

ul {
    list-style-type: none;
    background-color: #333;
    overflow: hidden;
}
li{
    float: left;
}
li a {
    display: block;
    color: white;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
}
li a:hover:not(.active){
    background-color: darkgrey;
}

.active {
    background-color: cornflowerblue;
}
#div1{
    margin-left: 100px;
    width: 200px;
    height: 150px;
    background-color: lightgreen;
    text-align: center;
    float: left;
    border-radius: 10px;
}
#div2{
    float: left;
    width: 200px;
    height: 150px;
    margin-left: 60px;
    background-color: lightslategrey;
    text-align: center;
    border-radius: 10px;
}
#div3{
    float: left;
    width: 200px;
    height: 150px;
    margin-left: 60px;
    background-color: mediumpurple;
    text-align: center;
    border-radius: 10px;
}
#div4{
    float: left;
    width: 200px;
    height: 150px;
    margin-left: 60px;
    background-color: navajowhite;
    text-align: center;
    border-radius: 10px;
}

#div5{
    clear: both;
    margin-left: 400px;
    margin-top: 30px;
    float: left;
    width: 450px;
    height: 250px;
    background-color:thistle;
    text-align: center;
    border-radius: 10px;
    overflow-x: auto;
}
table{
    border-collapse: collapse;
    align-self: center;
    margin: auto;
}
th, td{
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid slategrey;
}