*{
     box-sizing-border: box;
}
.support-warning {
     background: #ccb11c;
     color: #000;
     display: block;
     font-family: 'Raleway', sans-serif;
     font-weight: 700;
     opacity: 0.95;
     padding: 3rem;
     position: fixed;
     text-align: center;
     top: 0;
     left: 0;
     width: 100%;
     z-index: 5;
}

.support-warning a {
     color: inherit;
}
.grid {
     display: flex;
     flex-wrap: wrap;
}
.grid--4x4 > .grid__item {
     flex: 1 0 auto;   
}


@supports(display: grid) {
     .support-warning {
          display: none;
     }
     
     .grid {
         display: grid;
     }
     
}
.grid--4x4 {
     grid-template-columns: 1fr 1fr;
     grid-template-rows: repeat(auto-fit, minmax(50vh, auto) minmax(50vh, auto));
}
.align-center {
     align-items: center;
     justify-content: center;
}

.content {
     padding: 3.5rem;
     max-width: 400px;
}
.heading {
     font-family: 'Arial', serif;
     font-size: 2rem;
     font-weight: 700;
     line-height: 1.2;
     margin-bottom: 1rem;
}
.description {
     font-family: 'Garamond', sans-serif;
     font-size: 1rem;
     line-height: 1.5;
}
.theme-rocketmetallic {
   background: #8F7F7F;
   color: #ffffff;
}
.theme-bittersweetdhimmer {
   background: #B85454;
   color: #ffffff;
}
.theme-pastelpink {
   background: #E8ACAC;
   color: #ffffff;
}
.theme-blackbean {
   background: #4A0D0D;
   color: #ffffff;
}