body {
    background : #252525;
}
.main {
    position : relative;
    z-index : 1;
    width : 100%;
    height : 100vh;
}


.part .logo_part-logo{
    display: flex;
    width: 100%;
   justify-content: center;
}
.part .logo_part-logo img{
   
    width: 50%;

}


.main .part > a > span.link-text {
    position : fixed;
    cursor : pointer;
    z-index : 4;
    top :  70%;
    left : 50%;
    font-size : 1.8rem;
    line-height: 2rem;
    color : #FFFFFF;
    font-style : italic;
    font-weight : 900;
    font-family: 'Roboto', sans-serif;
    text-decoration : none;
    text-transform : uppercase;
    -webkit-transform : translateY(-50%) translateX(-50%);
    -moz-transform : translateY(-50%) translateX(-50%);
    transform : translateY(-50%) translateX(-50%);
   
}
.main .part > a > span.link-text > span {
    font-weight : 300;
    color : #FFFFFF;
}
.main .part.hovered > a:hover > span.link-text {
    display : block;
}
.main .part > a > span.link-text:hover {
    color : red;
}
.main .part > a > span.link-text:hover > span {
    color : #FFFFFF;
}

.main a:hover .logo_part-logo img{
    opacity: 1 !important;
}


.main.moto_bike{
    width: 100%;
    display: flex;
    flex-direction: column;
    flex-wrap: wrap;
}


.main .part{
    position : relative;
    width : 100vw;
    overflow : hidden;
    margin : 0;
    padding : 0;
    flex-grow: 1;
    transition: all .3s ease-in;
    
}


.main .part > a > span.picture {
    position : absolute;
    width : 100%;
    height : 100%;
    z-index : 1;
    background-size: cover;
    background-position: center center;
    filter: contrast(100%) brightness(100%);
}

.main .part.moto{
    z-index: 1;
}


.main .part > a > span.link-text {
    position : absolute!important;
    top : 50%!important;
    left : 50%!important;
    display : block!important;
    text-align: center;
    z-index: 100;
}


.main .part.moto.hovered, .main .part.bike.hovered{
    flex-grow: 9;
     transition: all 1s;
     -moz-transition-timing-function: cubic-bezier(0.165, 0.840, 0.440, 1.000);
     -o-transition-timing-function: cubic-bezier(0.165, 0.840, 0.440, 1.000);
     transition-timing-function: cubic-bezier(0.165, 0.840, 0.440, 1.000);
 }

 .main .part.moto.hovered .picture, .main .part.bike.hovered .picture{

     filter: contrast(100%) brightness(155%);
     transition: all .5s ease-in;
 }

 .main .part.moto.unhovered .picture, .main .part.bike.unhovered .picture{

    filter: contrast(100%) brightness(40%);
    transition: all .5s ease-in;
}
 
.main .part.moto{
    z-index: 1;
}

.logo-main{
    display: none;
}



@media only screen and (min-width: 769px) and (orientation: landscape) {
 
    .main.moto_bike{
        flex-direction: row !important;
    }
    
.main .part{
   
    height : 100vh;
    width: auto;
    overflow : hidden;
    margin : 0;
    padding : 0;
    flex-grow: 1;
    transition: all .3s ease-in;
}

}




  



@media only screen and (min-width: 1001px) {


.logo-main{
    display: block;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 10;
    opacity: 1;
    transition: opacity .2s ease;
    transition-delay: .5s;
}

.logo-main.hovered{
    opacity: 0;
    transition: opacity .2s ease;
    z-index: -2;
}


.part .logo_part-logo{
    display: flex;
    width: 100%;
   justify-content: center;
   margin-bottom: 20px;
}
.part .logo_part-logo img{
    width: 0;
    height: 0;
    transition: all .2s ease-out;
}

.main .part.moto.hovered .logo_part-logo img, .main .part.bike.hovered .logo_part-logo img{
    width: 100%;
    height: 100%;
   
    transition: all .4s cubic-bezier(0.64, 0.57, 0.67, 2.53);
    transition-delay: .4s;
}
    
.main.moto_bike{
    flex-direction: row !important;
}

.main .part{
   
    height : 100vh;
    width: auto;
    overflow : hidden;
    margin : 0;
    padding : 0;
    flex-grow: 1;
    transition: all .3s ease-in;
}


}