body {
    color: white;
    margin: 0;
    padding: 0;
    background-image: url(./fitnes.jpg);
    font-family: 'Montserrat', sans-serif;
}

.left {
    position: absolute;
    display: inline-block;
    left: 20px;
    top: 10px;

}

.left img {
    width: 40px;
    filter: invert(100%);
}

.mid {
    display: block;
    margin: 5px 300px;
    width: 42%;
}

.navbar {
    display: inline-block;
}

.navbar li {
    display: inline-block;
    font-size: 15px;
}

.navbar li a {
    color: white;
    text-decoration: none;
    padding: 0px 8px;
    font-size: 18px;
}

.right {
    position: absolute;
    display: inline-block;
    top: 10px;
    right: 5px;
}

.right .btn {
    background-color: lightslategray;
}

.navbar li a:hover {
    text-decoration: underline;
    color: green;
}

.btn {
    background-color: black;
    color: white;
    margin: 0 9px;
    padding: 4px 10px;
    font-size: 15px;
    border: 2px solid black;
    border-radius: 10px;
}

.btn:hover {
    background-color: white;
    color: black;
}

.container {
    margin: 60px 50px;
    padding: 15px 55px;
    width: 30%;
    border: 2px solid white;
    border-radius: 12px;
}

.container h2 {
    text-align: center;
    font-size: 25px;
}

.container h2:hover {
    color: green;
    display: block;
    text-decoration: underline;
}

.form-group input {
    text-align: center;
    padding: 2px;
    display: block;
    margin: 5px auto;
    width: 230px;
    border: 2px solid gray;
    border-radius: 10px;
    background-color: aquamarine;
}

.btn {
    display: block;
    text-align: center;
    margin: 5px auto;
    padding: 3px 70px;
}

.btn:hover {
    background-color: green;
    color: black
}

.form-group input:hover {
    transform: scale(1.01);
}

.ftr {
    position: absolute;
    bottom: 0px;
    display: inline-block;
    width: 100%;
    background-image: linear-gradient(black, gray);
    opacity: 0.5;
    height: 60px;
    border: 2px solid white;
    text-align: center;
    color: white;
}