<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
*{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  width: 100vw;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(25vw, 1fr));
  grid-gap: 10px;
  padding: 10px;
}

div {
  min-height: 150px;
  
  &:nth-child(1) {
    width: calc(100% - 8px);
    height: calc(150px - 8px);
    margin: 4px auto;
    border: 5px solid orange;
    box-shadow: 0px 0px 0 4px red;
  }
  
  &:nth-child(2) {
    width: calc(100% - 8px);
    height: calc(150px - 8px);
    margin: 4px auto;
    border: 5px solid orange;
    outline: 4px solid red;
  }
  
  &:nth-child(3) {
    border: 4px solid red;
    padding: 5px;
    background: linear-gradient(to right, #fff, #fff), orange;
    background-clip: content-box, padding-box;
  }
  
  &:nth-child(4) {
    border: 4px solid transparent;
    padding: 5px;
    background: linear-gradient(to right, #fff, #fff),linear-gradient(to right, orange, orange), red;
    background-clip: content-box, padding-box, border-box;
  }
  
  &:nth-child(5){
    position: relative;
    padding: 9px;
    background: linear-gradient(to right, #fff, #fff);
    background-clip: content-box;
    
    &::before,
    &::after {
      content: '';
      position: absolute;
    }
    &::before {
      background: orange;
      z-index: -1;
      top: 4px;
      right: 4px;
      bottom: 4px;
      left: 4px;
    }
    &::after {
      content: '';
      top: 0;
      right: 0;
      bottom: 0;
      left: 0;
      z-index: -2;
      background: red;
    }

  }
}

External CSS

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External JavaScript

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