* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  gap: 20px;
  height: 100vh;
  background: #f5f5f5;
}

.barre2prog {
  width: 100%;
  height: 20px;
  background: #eee;
  border-radius: 10px;
  position: relative;
}

.barre2prog::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 0;
  background: #0640e0;
  border-radius: inherit;
  animation: prog 1s linear infinite;
}

.barre2prog2 {
  width: 100%;
  height: 20px;
  background: #eee;
  border-radius: 10px;
  position: relative;
}

.barre2prog2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 0;
  background: #ffffff;
  border-radius: inherit;
  animation: prog 1s linear infinite;
}

.barre2prog3 {
  width: 100%;
  height: 20px;
  background: #eee;
  border-radius: 10px;
  position: relative;
}

.barre2prog3::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 0;
  background: #eb1313;
  border-radius: inherit;
  animation: prog 1s linear infinite;
}

@keyframes prog {
    0% { width: 0;}
    100% { width: 100%;}
}