style.css

body {
    background-color: #bdc3c7;
}
/* Header */
header {
    border: 5px solid #d35400;
    border-radius: 15px;
    text-align: center;
    background-color: #2c3e50;
    margin: 20px;
    padding: 10px;
}
header img{
    width: 15%;
}

/* Navigation Bar */
nav > ul {
    border: 5px solid #d35400;
    border-radius: 15px;
    margin: 20px;
    list-style-type: none;
    padding: 0;
    overflow: hidden;
    background-color: #2c3e50;
}
nav > ul li {
    float: left;
}
nav > ul li a {
    display: block;
    color: white;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
}
nav > ul li a:hover:not(.active) {
    background-color: #d35400;
}
nav > ul li a.active {
    background-color: #bdc3c7;
}

/* Footer */
footer {
    margin: 20px;
    border: 5px solid #d35400;
    border-radius: 15px;
    color: white;
    background-color: #2c3e50;
    text-align: center;
    height: 50px;
    padding: 15px;
}

/* ----- Complements ----- */
/* Headers */
h1{
    color: #2c3e50;
    margin: 20px;
}

/* Buttons */
button{
    border: 3px solid #d35400;
    border-radius: 10px;
    background-color: #2c3e50;
    color: white;
    margin: 20px;
    padding: 5px;
}
button:hover{
    background-color: #e67e22;
    cursor: pointer;
}

.button{
    border: 3px solid #d35400;
    border-radius: 10px;
    background-color: #2c3e50;
    color: white;
    margin: 0px;
    padding: 5px;
}
.button:hover{
    background-color: #e67e22;
    cursor: pointer;
}

/* Panels */
.panel {
    border: 5px solid #d35400;
    color: white;
    border-radius: 15px 50px;
    background-color: #2c3e50;
    width: auto;
    margin: 20px;
    padding: 20px;
}

/* Tables */
.horizontalTable {
    margin: 20px;
    color: white;
    border-color: #d35400;
    border-spacing: 0;
    font: normal 13px Arial, sans-serif;
}

.horizontalTable th {
    border: none;
    background-color: #2c3e50;
    color: #e67e22;
    padding: 10px;
    text-align: left;
    font-size: 22px;
}
.horizontalTable td {
    border: none;
    border-top: solid 1px #957030;
    background-color: #34495e;
    padding: 10px;
}
.horizontalTable th:first-child {
    border-radius: 10px 0 0 0;
}
.horizontalTable th:last-child {
    border-radius: 0 10px 0 0;
}
.horizontalTable tr:last-child td:first-child {
    border-radius: 0 0 0 10px;
}
.horizontalTable tr:last-child td:last-child {
    border-radius: 0 0 10px 0;
}

.projects{
    width: 50%;
}

.tasks{
    width: 90%;
}
.tasks td{
    width: 20%;
}

#login {
    text-align: center;
    width: 150px;
    margin: 0 auto 20px;
}

/* Forms */
.form-container{
    display: table;
    border-collapse: separate;
    border-spacing: 50px 0px;
    margin: 20px;
}
.form-container form > button{
    position: relative;
    top: -50%;
    left: 100%;
}
.form-section{
    display: table-cell;
    border: 5px solid #d35400;
    border-radius: 20px;
    background-color: #2c3e50;
    color: white;
    text-align: center;
    padding: 20px;
}
.form-section legend{
    border-radius: 5px;
    background-color: #d35400;
}

/* Utilities */
.clearfix {
    clear: both;
}