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

:root {
    --robot-color: ;
    --robot-face: black;
    --robot-eyes: white;
}

html {
    background-color: blueviolet;
}

header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 200px;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
    z-index: 20;
}

header h1, #money, #timer {
    font-family: 'Arial', sans-serif;
    font-size: 45px;
    z-index: 20;
    color: white;
    font-style: bold;
}

#money {
position: relative;
align-items: right;
}

#timer {
position: relative;
align-items: left
}

#robot-frame {
height: 300px;
width: 300px;
fill: none;
position: absolute;
z-index: 10;
}

    #eyes {
    fill: var(--robot-eyes);
    }

    #face {
    fill: var(--robot-face);
    }

#coin-frame {
height: 100px;
width: 100px;
fill: none;
transition: all ease-in-out 0.3s;
position: relative;
z-index: 1;
}


    
#start, #overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.75);
    color: white;
    font-size: 48px;
    display: flex;
    justify-content: center;
    align-items: center;
    visibility: hidden;
    z-index: 20;
}
#start {
    visibility: visible;
    background: rgba(0, 10, 115, 0.85) opacity 0.70;
}
#start button, #overlay button, #overlay-win button {
    font-size: 36px;
    padding: 20px 40px;
    cursor: pointer;
    background-color: rgb(16, 181, 16);
    color: white;
    border: white 2px solid;
}

#overlay-win  {
    position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.75);
        color: white;
        font-size: 48px;
        display: flex;
        justify-content: center;
        align-items: center;
        visibility: hidden;
        z-index: 20;
}