* {
    font-family: Roboto, Mono;
    font-size: 14px;
}

table{
    width: 50%;
    margin: 30px auto;
    border-collapse: collapse;
    text-align: left;
}
tr {
    border-bottom: 1px solid #cbcbcb;
}
th, td{
    border: none;
    height: 30px;
    padding: 2px;
}
tr:hover {
    background: #F5F5F5;
}

form {
    width: 45%;
    margin: 50px auto;
    text-align: left;
    padding: 20px; 
    border: 1px solid #bbbbbb; 
    border-radius: 5px;
}

.input-group {
    margin: 10px 0px 10px 0px;
}
.input-group label {
    display: block;
    text-align: left;
    margin: 3px;
}
.input-group input {
    height: 30px;
    width: 93%;
    padding: 5px 10px;
    font-size: 16px;
    border-radius: 5px;
    border: 1px solid gray;
}

.search-group input {
    height: 30px;
    width: 93%;
    font-size: 16px;
}
.btn {
    padding: 10px;
    font-size: 15px;
    color: white;
    background: #5F9EA0;
    border: none;
    border-radius: 5px;
}

.create_btn {
    text-decoration: none;
    padding: 2px 5px;
    background: #5F9EA0;
    color: white;
    border-radius: 3px;
    margin: 400px;
}

.back_btn {
    text-decoration: none;
    padding: 2px 5px;
    background: #88B8E7;
    color: white;
    border-radius: 3px;
    margin: 400px;
}

.edit_btn {
    text-decoration: none;
    padding: 2px 5px;
    background: #2E8B57;
    color: white;
    border-radius: 3px;
}

.del_btn {
    text-decoration: none;
    padding: 2px 5px;
    color: white;
    border-radius: 3px;
    background: #800000;
}

header {
    background: #5F9EA0;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 40px;
    display: flex;
    align-items: center;
    box-shadow: 0 0 25px 0 black;
}

header * {
    display: inline;
}

header li {
    margin: 20px;
}

header li a {
    color: black;
    text-decoration: none;
}

main {
    background: white;
}

.hero {
    width: 100vw;
    height: 100vh;
    
    display: flex;
    justify-content: center;
    align-items: center;
    
    text-align: center;
    color: white;
    
    background-image: linear-gradient(rgba(0, 0, 0, 0.5),rgba(0, 0, 0, 0.5)), url('https://www.pepperconstruction.com/sites/default/files/images/pmc1.jpg');
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    background-attachment: fixed;
}

.hero h1 {
    font-size: 5em;
    
    margin-top: 0;
    margin-bottom: 0.5em;
}
.success {
    background: #cdf3cd;
    padding: 10px 60px;
    border: #c3e6c3 1px solid;
    display: inline-block;
}