styles.css

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    background-color: rgb(40, 42, 71);  
}
#wrapper {
    margin: 0 auto auto auto;
    width: 80%;
}
img {
    display: block;
    margin: 5px auto 5px auto;
    height: 700px;
}
.hide {display: none;}
h1 {
    text-align: center;
    margin: 10px auto;
}
p {
    font-size: 1.5em;
    text-align: center;
    margin: 10px auto 10px auto;
}
span {
    font-size: 0.8em;
}
/* forms section --------------------------------------- */
form {
    padding: 10px;
    border: 1px black solid;
    margin: auto 10px;
}
label {
    /* puts the label on its own line */
    display: block; 
}
input[type="text"]:focus {
    border: 3px green solid;
}
button {
    margin-left: 150px;
    margin-top: 10px;
}
#formErrors {
    background-color: rgb(0, 0, 0);
    width: 300px;
    color: red;
    margin-left: 50px;
}
#formErrors li {
    padding: 10px auto;
    margin-left: 20px;
}
.error  {
    color: red;
}
.formSection {
    margin: 10px 20px;
}
/* tabs sections ------------------------------------ */
#tabs {
    list-style: none;
    width: 100%;
    text-align: center;
}
#tabs li {
    float: left;
    width: 200px;
    height: 50px;
    margin-left: 20px;
    margin-top: 20px;
    background-color: lightcyan;
}
#tabs li a {
    width: 100%;
    height: 100%;
    cursor: pointer;
    display: inline-block;
    border-top: 1px black solid;
    border-left: 1px black solid;
    border-right: 1px black solid;
}
#tabs li a.inactive {
    background-color: lightgray;
    color: rgb(117, 116, 116);
    border: none;
}
#tabs li a.inactive:hover {
    background-color: rgb(180, 180, 180);
    color: rgb(245, 245, 245);
}
/* content container section ---------------------------- */
.container {
    clear: both;
    height: 800px;
    background-color: rgb(121, 137, 143);
    border: 1px solid black;
}
/* footer section ---------------------------------------- */
footer {
    clear: both;
    background-color: lightblue;
    height: 50px;
}
footer ul {
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}
footer li {
    float: left;
    margin-left: 20px;
    list-style: none;
}