panel.css

.panel1{
    background-image:url(images/panel1.jpeg);
}
.panel2{
    background-image:url(images/panel2.jpg) ;
}
.panel3{
    background-image:url(images/panel3.jpg) ;
}
.panel4{
    background-image:url(images/panel4.jpeg) ;
}
.panel5{
    background-image:url(images/panel5.jpg) ;
}

.panels{
    min-height: 100vh;
    overflow: hidden;
    display: flex;
}

.panel{
    /* background: #6b0f9b; */
    /* box-shadow: inset 0 0 0 5px rgba(255, 255, 255, 0.1)); */
    color: white;
    text-align: center;
    align-items: center;
    transition: 
        font-size 0.7s cubic-bezier(0.61, -0.19, 0.7, -0.11);
        flex: 0.7s cubic-bezier(0.61, -0.19, 0.7, -0.11);
        background: 0.2s;
    font-size: 20px;
    background-size: cover;
    background-position: center;
    flex: 1;
    justify-content: center;
    align-items: center;
    display: flex;
    flex-direction: column;
}

/* flex item */
.panel > *{
    margin: 0;
    width: 100%;
    transition: transform 0.5s;
    /* border: 1px solid whitesmoke;  */
    flex: 1 0 auto;
    display: flex;
    justify-content: center;
    align-items: center;
}

.panel p {
    text-transform: uppercase;
    font-family: 'Amatic SC', cursive;
}

.panel p:nth-child(2){
    font-size: 4em;
}

.panel >:first-child {transform: translatey(-100%);}
.panel.open-active >:first-child {transform: translateY(0);}
.panel >:last-child {transform: translatey(100%);}
.panel.open-active >:last-child {transform: translateY(0);}

.panel.open {
    flex: 5;
    font-size: 40px;
}

.cta{
    color: white;
    text-decoration: none;
}