Well, I'm in a project, you'd better see the code, I think that css3 does not allow it to affect with a selector an element that is before the main element. If you execute it, you will see that the CSS does not affect the element. First so that it makes small, and bugea and the Second element is put down because it exceeds 100%
/* COLORES: #128C4E #8C261A #024027 #401309*/
.Proyectos ul li.ProyectoNormal {
background: #128C4E;
width: 40%;
padding: 4%;
margin: 1%;
}
.Proyectos ul li.ProyectoGrande {
background: #128C4E;
width: 90%;
padding: 4%;
margin: 1%;
}
.Proyectos ul li {
border-top: 5px solid white;
height: 40px;
list-style: none;
float:left;
}
.Proyectos ul li a {
text-decoration: none;
color:black;
text-align: center;
}
.Proyectos ul li.Primero:hover {
animation-name: Primero;
animation-duration: 0.3s;
animation-timing-function: linear;
animation-fill-mode: forwards;
}
.Proyectos ul li.Segundo:hover {
animation-name: Segundo;
animation-duration: 0.3s;
animation-timing-function: linear;
animation-fill-mode: forwards;
}
@keyframes Primero {
0% { height: 40px; width: 40%;}
50% { height: 150px; width: 50%;}
100% { height: 200px; width: 60%;}
}
@keyframes Segundo {
0% {float: right; height: 40px; width: 40%;}
50% {float: right; height: 150px; width: 50%;}
100% {float: right; height: 200px; width: 60%;}
}
.Proyectos ul li.Primero:hover ~ .Segundo{
animation-name: Pequeño;
animation-duration: 0.3s;
animation-timing-function: linear;
animation-fill-mode: forwards;
}
.Proyectos ul li.Segundo:hover ~ .Primero{
animation-name: Pequeño;
animation-duration: 0.3s;
animation-timing-function: linear;
animation-fill-mode: forwards;
}
@keyframes Pequeño {
0% { height: 40px; width: 40%;}
50% { height: 150px; width: 30%;}
100% { height: 200px; width: 20%;}
}
.Proyectos ul li.ProyectoGrande:hover {
border-top: 5px solid black;
animation-name: Grande;
animation-duration: 1s;
animation-timing-function: linear;
animation-fill-mode: forwards;
}
@keyframes Grande {
0% { height: 40px; }
50% { height: 150px; }
100% { height: 200px; }
}
<div class="Proyectos">
<ul>
<li class="ProyectoNormal Primero"><a href="">
<h2>Proyecto 1</h2>
</a></li>
<li class="ProyectoNormal Segundo"><a href="">
<h2>Proyecto 2</h2>
</a></li>
<li class="ProyectoGrande"><a href="">
<h2>Proyecto 3</h2>
</a></li>
</ul>
</div>