*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
html {
    scroll-behavior: smooth;
  }
.container{
    background: url("images/arkaplan.jpg");
    background-size: 100% 100%;
    background-attachment: fixed;
    background-repeat: no-repeat;
}
.navbar{
    width: 100%;
    height: 80px;
    background: (0, 0, 0, 0.1);
    backdrop-filter: blur(40px);
    user-select: none;
    
}
.logo{
    display: inline-block;
    margin-left: 25px;
    margin-top: 10px;
    
}
ul{
    float: right;
    margin-right: 20px;
}

ul li{
    list-style: none;
    display: inline-block;
    margin-top: 30px;
    margin-left: 30px;
}
ul li a{
    text-decoration: none;
    border-radius: 25%;
    color: black;
    font-size: 20px;
    font-family: monospace;
    padding: 6px 12px;
    font-weight: bold;
    user-select: none;
}
li a:hover{
    background-color: rgb(222, 255, 227);
    border-radius: 40px;
    transition: 2s;
}
.wrapper {
    width: 90%;
    margin: 0 auto;
    max-width: 80rem;
}
.cols {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
}
.col {
    width: 200px;
    margin: 1rem;
    cursor: pointer;
}
.raptiye {
    -webkit-transform-style: preserve-3d;
    transform-style: preserve-3d;
    -webkit-perspective: 1000px;
    perspective: 1000px;
}
.front,
.back {
    background-size: cover;
    box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.25);
    border-radius: 10px;
    background-position: center;
    -webkit-transition: -webkit-transform .7s cubic-bezier(0.4, 0.2, 0.2, 1);
    transition: -webkit-transform .7s cubic-bezier(0.4, 0.2, 0.2, 1);
    -o-transition: transform .7s cubic-bezier(0.4, 0.2, 0.2, 1);
    transition: transform .7s cubic-bezier(0.4, 0.2, 0.2, 1);
    transition: transform .7s cubic-bezier(0.4, 0.2, 0.2, 1), -webkit-transform .7s cubic-bezier(0.4, 0.2, 0.2, 1);
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    text-align: center;
    min-height: 370px;
    box-shadow: 0 0 10px solid rgb(255, 0, 0);

    height: auto;
    border-radius: 10px blue;
    color: #fff;
    font-size: 1.5rem;
    user-select: none;
}
.back {
    background:rgb(123, 120, 120);
    background: -webkit-linear-gradient(45deg, #a95959 0%, #ca3e3e 100%);
    background: -o-linear-gradient(45deg, #d45454 0%, #86d5f9 100%);
    background: linear-gradient(45deg, #5d5473 0%, #596a72 100%);
}
.front:after {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
    width: 100%;
    height: 100%;
    content: '';
    display: block;
    opacity: .6;
    background-color: #000;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    border-radius: 10px;
    user-select: none;
}
.raptiye:hover .front,
.raptiye:hover .back {
    -webkit-transition: -webkit-transform .7s cubic-bezier(0.4, 0.2, 0.2, 1);
    transition: -webkit-transform .7s cubic-bezier(0.4, 0.2, 0.2, 1);
    -o-transition: transform .7s cubic-bezier(0.4, 0.2, 0.2, 1);
    transition: transform .7s cubic-bezier(0.4, 0.2, 0.2, 1);
    transition: transform .7s cubic-bezier(0.4, 0.2, 0.2, 1), -webkit-transform .7s cubic-bezier(0.4, 0.2, 0.2, 1);
}
.back {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
}
.inner {
    -webkit-transform: translateY(-50%) translateZ(60px) scale(0.94);
    transform: translateY(-50%) translateZ(60px) scale(0.94);
    top: 50%;
    position: absolute;
    left: 0;
    width: 100%;
    padding: 2rem;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    outline: 1px solid transparent;
    -webkit-perspective: inherit;
    perspective: inherit;
    z-index: 2;
}
.raptiye .back {
    -webkit-transform: rotateY(180deg);
    transform: rotateY(180deg);
    -webkit-transform-style: preserve-3d;
    transform-style: preserve-3d;
}
.raptiye .front {
    -webkit-transform: rotateY(0deg);
    transform: rotateY(0deg);
    -webkit-transform-style: preserve-3d;
    transform-style: preserve-3d;
}
.raptiye:hover .back {
    -webkit-transform: rotateY(0deg);
    transform: rotateY(0deg);
    -webkit-transform-style: preserve-3d;
    transform-style: preserve-3d;
}
.raptiye:hover .front {
    -webkit-transform: rotateY(-180deg);
    transform: rotateY(-180deg);
    -webkit-transform-style: preserve-3d;
    transform-style: preserve-3d;
}
.front .inner p {
    font-size: 2rem;
    margin-bottom: 2rem;
    position: relative;
}
.front .inner p:after {
    content: '';
    width: 4rem;
    height: 2px;
    position: absolute;
    background: #eaeaea;
    display: block;
    left: 0;
    right: 0;
    margin: 0 auto;
    bottom: -.75rem;
}
.front .inner span {
    color: rgba(255, 255, 255, 0.7);
    font-family: 'Montserrat';
    font-weight: 300;
}
@media screen and (max-width: 64rem) {
    .col {
        width: calc(33.333333% - 2rem);
    }
}
@media screen and (max-width: 48rem) {
    .col {
        width: calc(50% - 2rem);
    }
}
@media screen and (max-width: 32rem) {
    .col {
        width: 100%;
        margin: 0 0 2rem 0;
    }
}
.yukari{
    display: none;
    height: 80px;
    width: 80px;
    border-radius: 40px;
    background-color: rgb(117, 140, 222);
    color: white;
    font-size: 30px;
    line-height: 80px;
    text-align: center;
    position: fixed;
    bottom: 15px;
    right: 15px;
    user-select: none;
}
.yukari:hover{
    cursor: pointer;
    background-color: rgb(64, 211, 69);
    
}
.goster{
    display: block;
}