.slider1{
padding: 0;
margin: 20px;
/* height: 100vh; */
display: flex;
justify-content: center;
align-items: center;
}
.slider{
    width: 800px;
    height: 300px;
    border-radius: 10px;  
    overflow: hidden;
}
.slides{
    width: 500%;
    height: 300px;
    display: flex;
}
.slides input{
    display: none;

}
.slide{
    width: 20%;
    transition: 2s;
}
.slide img{
    width: 800px;
    height: 300px;
}

.navegacionmanual{
    position: absolute;
    width: 800px;
    margin-top: -40px;
    display: flex;
    justify-content: center;
}
.manualbtn{
    border: 2px solid gray;
    padding: 5px;
    border-radius: 10px;    
    cursor: pointer;
    transition: 1s;
}
.manualbtn:not(:last-child){
    margin-right: 40px;
}
.manualbtn:hover{
    background: grey;
}

#radio1:checked ~ .first{
    margin-left: 0;
}
#radio2:checked ~ .first{
    margin-left: -20%;
}
#radio3:checked ~ .first{
    margin-left: -40%;
}
#radio4:checked ~ .first{
    margin-left: -60%;
}

.navegacionauto{
    position: absolute;
    display: flex;
    width: 800px;
    justify-content: center;
    margin-top: 460px;
}
.navegacionauto div{
    border: 2px solid grey;
    padding: 5 px;
    border-radius: 10px;
    transition: 1s;
}
.navegacionauto div:not(:last-child){
    margin-right: 40px;
}
#radio1:checked ~ .navegacionauto .autobtn1{
    background: grey;
}
#radio2:checked ~ .navegacionauto .autobtn1{
    background: grey;
}
#radio3:checked ~ .navegacionauto .autobtn1{
    background: grey;
}
#radio4:checked ~ .navegacionauto .autobtn1{
    background: grey;
}