*,
html{
    margin: 0;
    padding: 0;
}

.container{
    height: 100vh;
    display: flex;
    flex-direction: column;
}
.container-navbar {
    background-color: grey;
    width: 100%;
    height: 100px;
}

.ul-navbar{
    display: flex;
    height: 100px;
    justify-content: center;
    align-items: center;
}

.li-navbar{
    list-style-type: none;
    padding: 20px;
    margin: 5px;
    color: white;
    font-size: 30px;
}

.li-navbar:hover {
    background-color: navy;
    transition: .3s ease-in-out;
    border-radius: 8px;
}

.a-navbar{
    color: white;
    text-decoration: none;
}

.container-content {
    flex: 1;
    background-color: whitesmoke;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden
}
.a-content{
    background-color: blue;
    width: 400px;
    height: 400px;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 10px 10px 5px 0px rgba(0,0,0,0.29);
-webkit-box-shadow: 10px 10px 5px 0px rgba(0,0,0,0.29);
-moz-box-shadow: 10px 10px 5px 0px rgba(0,0,0,0.29);
}

.img-content{
    max-height:100%;
    width:auto;
    display: block;
}

.container-footer{
    background-color: grey;
    display:flex;
    justify-content: center;
    align-items: center;
}

.h1-footer{
font-size:20px;
color: white;
}