.middle {margin: 0px 25px;}
.right {margin-right: 28px;}
.left {margin-left: 28px;}
.navfloat {margin-left: 28px;}
.center {margin: auto; display: block;}
.imgwidth {width: 1440px;}
.logocenter {margin: auto; display: block; width: 360px; margin-bottom: 50px;}

ul {margin-bottom: 35px; padding: 0px; position: relative;}
header {background-color: #E0E0E0; width: 1500px; width: 1440px; margin: auto; padding: 30px;} 
h1 {color: #FF4900; font-size: 45px;}
h3 {color: #0919B2;}
li {display: inline-block; padding: 20px; background-color: #C4C4C4; width: 200px; text-align: center; position: relative;}

main {margin: auto; width: 1440px; padding: 30px; background-color: #E0E0E0; height: 450px;}

.adiv {width: 250px; height: 250px; float: left; margin: 15px 115px; text-align: center; background-color: #C4C4C4;}
.divcenter {text-align: center; width: 1440px;}
.martopx{margin-top: 275px;}
.altheight {height: 550px; margin: auto; width: 1440px; padding: 30px; background-color: #E0E0E0;}
.bdiv {width: 250px; height: 350px; float: left; margin: 15px 55px; text-align: center; background-color: #C4C4C4;}
.cdiv {text-align: center; margin: auto; width: 250px; height: 150px; background-color: #C4C4C4; padding-top: 10px; margin-top: 20px;}
.ddiv {width: 250px; height: 350px; float: left; margin: 15px 235px; text-align: center; background-color: #C4C4C4;}

a:link {color: #0919B2; text-decoration: none;}
a:visited {color: #FF4900; text-decoration: none;}
a:hover {text-decoration: underline;}
a:active {text-decoration: underline;}

body {font-family: 'Nanum Gothic Coding', monospace; margin: 0px;}


.drop {display: none; position: absolute; top: 100%; width: 200px; list-style: none; margin-left: -592px; padding: 0px;}

nav ul li:hover > ul {display: inherit; margin: 0px;}

nav ul ul li {display: list-item; position: relative; min-width: 170px; margin-left: -192px; background-color: #C4C4C4;}


form {text-align: center; margin: auto; float: left; width: 800px; background-color: #C4C4C4;}

.greydiv{float: left; padding: 20px; background-color: #C4C4C4; height: 700px; margin-left: 100px;;}

label {color: #FF4900}


.slideshow {overflow: hidden; height: 300px; width: 1440px; margin: 0 auto;}

.slidebox {width: 2912px; -webkit-animation: slide 20s ease infinite;}

.slide {float: left; height: 510px; width: 728px;}

.float {float:left;}

@-webkit-animation slide {
    20% {margin-left: 0px;}
    30% {margin-left: -728px;}
    50% {margin-left: -728px;}
    60% {margin-left: -1456px;}
    70% {margin-left: -1456px;}
    80% {margin-left: -2184px;}
    90% {margin-left: -2184px;}
}