* {
    margin:0;
    padding: 0;
}

body {
    background-color: black;
    color: white;
    font-family: sans-serif;
   
}

.container {
    margin: 10px;
    padding: 10px;
}

.header__title {
    text-align: center;
}

.task {
    display: flex;
    justify-content: center;
    

}

.task__todo {
    font-size:xx-large;
    text-align: center;
    list-style: none;
    text-transform: uppercase;
    margin: 5px;
}


.task__btn {
    height: 20px;
        width: 20px;
        border-radius: 50%;
    border: 0 solid;
    box-shadow: inset 0 0 20px rgba(255, 255, 255, 0);
    outline: 1px solid;
    outline-color: rgba(255, 255, 255, .5);
    outline-offset: 0px;
    text-shadow: none;
    transition: all 1250ms cubic-bezier(0.19, 1, 0.22, 1);
  } 
  
  .task__btn:hover {
    border: 1px solid;
    box-shadow: inset 0 0 20px rgba(255, 255, 255, .5), 0 0 20px rgba(255, 255, 255, .2);
    outline-color: rgba(255, 255, 255, 0);
    outline-offset: 15px;
    text-shadow: 1px 1px 2px #427388; 
  }

  a {
    color: white;
    text-decoration: none;
    text-align: center;
    display: flex;
    justify-content: center;
    
  }
  a:hover {
    text-decoration: underline;
}