body {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, Helvetica, sans-serif;
  background-color: lightgray;
  overflow-y: auto;
}

header {
  text-align: center;
}
h1 {
  background-color: darkblue;
  margin: 0;
  padding: 30px;
  color: white;
}
hr {
  margin-top: 20px;
}
.container {
  justify-content: center;
  width: 90%;
  margin-left: auto;
  margin-right: auto;
  padding: 20px;
  border-radius: 10px;
}

.main-input {
  border: none;
  padding: 15px;
  width: 70%;
  font-size: 20px;
  border-radius: 10px 0 0 10px;
  margin-bottom: 30px;
}
.input-container {
  display: flex;
  width: 100%;
  margin-bottom: 20px;
}
.add {
  padding: 15px;
  border: none;
  background-color: teal;
  color: white;
  cursor: pointer;
  width: 30%;
  font-size: 20px;
  border-radius: 0 10px 10px 0;
  margin-bottom: 30px;
}
ul {
  list-style-type: none;
  padding: 0;
  margin: 0;
}
li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  list-style: none;
  padding: 15px 10px;
  border: 1px solid black;
  margin-top: 4px;
  border-radius: 10px;
  font-size: 20px;
  background-color: white;
}
.task-container {
  display: flex;
  align-items: center;
  gap: 10px;
}
.checkbox {
  width: 16px;
  height: 16px;
  cursor: pointer;
  border: 1px solid black;
  accent-color: black;
}

.delete-btn {
  background-color: red;
  border: none;
  color: white;
  cursor: pointer;
  border-radius: 4px;
  padding: 4px 8px;
  font-size: 16px;
}

.footer1 {
  display: none;
}

.footer {
  display: block;
  text-align: center;
  color: black;
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 20px;
}

.clear-all {
  display: none;
}

.clr-btn {
  display: block;
  width: 100%;
  padding: 10px 20px;
  background-color: whitesmoke;
  border: 1px solid gray;
  margin-bottom: 15px;
  font-size: 16px;
  font-weight: 600;
}

@media (max-width: 437px) {
  body {
    overflow-y: auto;
  }
  .container {
    width: 90%;
    margin: 50px auto;
    padding: 15px;
  }

  header h1 {
    font-size: 26px;
  }
  .input-container {
    margin-bottom: 0px;
  }

  .main-input {
    width: 93%;

    font-size: 18px;
  }

  .add {
    width: 50%;
    font-size: 18px;
  }

  li {
    font-size: 18px;
  }

  .delete-btn {
    align-self: flex-end;
    padding: 6px 10px;
    font-size: 14px;
  }

  .footer {
    font-size: 14px;
  }
}