.mascara{
            
    width: 100%;
    height: 100vh;
    margin: auto;
    overflow: hidden;
    

}

.slider{
    
    width: 500%;
    height: 100%;
    position: relative;
    display: flex;
    
    animation-name: slider;
    animation-duration: 20s;
    animation-iteration-count: infinite;
}
.marco{
    
    width: 20%;
    height: 100%;
    position: relative;
    
    }

.marco img{
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.m_dos p{
    position: absolute;
    font-size: 4em;
    text-transform: uppercase;
    top: 45%;
    left: 30px;
    
    color:white;
    text-shadow: 5px 5px 5px black;
}
.m_dos a{
    display: block;
    padding: 20px 50px;
    background-color: white;
    color: orangered;
    box-shadow: 10px 10px 10px black;

    position: absolute;
    top: 55%;
    left: 50px;

}

@keyframes slider {
0%{left: 0%;}
15%{left: 0%;}
25%{left: -100%;}
40%{left: -100%;}
50%{left: -200%;}
65%{left: -200%;}
75%{left: -300%;}
90%{left: -300%;}
100%{left: -400%;}
}