todolist.css

body {
    background-image:linear-gradient(to right,rgb(92, 79, 79), rgb(28, 25, 25));
}
.box {
    width: 500px;
    height: 400px;
    margin: auto;
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    background-color:whitesmoke;
    border-radius: 10px;
  }
#h1 {
    font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
    color: black;
    text-align: center;
}
#taskbtn {
    align-items: center;
    align-content: center;
    background-image: linear-gradient(to right,rgb(28, 25, 25), rgb(28, 25, 25));
    color: azure;
    width: 330px;
    height: 40px;
    margin-left: 40px;
    padding-left: 20px;
}
#addbtn {
    width: 50px;
    height: 40px;
    background-color: black;
    color: azure;
    margin-left: 10px;
}

.task {
    border: 2px solid black;
    background-color:whitesmoke;
    color: black;
    padding: 10px;
    height:20px;
    width:400px;
    margin-left: 40px;
    margin-top: 15px;
    font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
    font-size: 15px;
    font-weight: bold;
}

.del-btn {
    width: 50px;
    height: 30px;
    background-color: black;
    color: azure;
    margin-left: 10px;
}
.task {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  
  .task-text {
    margin-right: 10px;
  }
  
  .task button.task-btn {
    margin-left: 10px;
  }