body {
  width: 900px;
  height: 800px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

button {
  font-size: 1.5rem;
  color: rgb(7, 75, 99);
  width: 200px;
  margin: 10px;
}

table {
  text-align: center;
}

th,
td {
  border: 1px solid rgb(118, 156, 148);
  padding: 5px;
}

a {
  text-decoration: none;
  color: red;
  font-weight: bolder;
}

img {
  height: 30px;
  width: 30px;
}

@keyframes changing {
  from {
    border-style: solid;
  }
  to {
    border-style: dotted;
    border-color: red;
  }
}

.remind {
  border-style: solid;
  animation-name: changing;
  animation-duration: 1s;
  animation-timing-function: linear;
  animation-iteration-count: infinite;
}

.green {
  background-color: rgb(106, 181, 118);
}