The document contains CSS code for styling a WhatsApp chat trigger button. It goes through multiple iterations of adjusting properties like background color, padding, positioning of elements to optimize the design and layout of the trigger button. Key aspects include making the button circular, centering the WhatsApp icon, and adding a shadow effect.

1. .tochatbe-widget__trigger {
border-radius: 2em;
padding: 10px 15px;
font-size: 18px;
font-weight: bold;
display: flex;
align-items: center;
background-color: #02ad00;
}
.tochatbe-icon-whatsapp {
font-size: 1.5em;
margin-right: .3em;
}

2. .tochatbe-widget__trigger {
border-radius: 2em;
padding: 10px 15px;
font-size: 18px;
font-weight: bold;
background-color: #02ad00;
display: flex;
align-items: center;
flex-flow: row-reverse;
}
.tochatbe-icon-whatsapp {
font-size: 1.5em;
margin-left: .3em;
}

3. .tochatbe-widget__trigger {
border-radius: 2em;
font-size: 18px;
font-weight: bold;
display: flex;
align-items: center;
flex-flow: row-reverse;
padding: 0 0 0 15px;
overflow: hidden;
}
.tochatbe-icon-whatsapp {
font-size: 1.5em;
background: #017e00;
padding: 10px 15px 10px 10px;
margin-left: 7px;
}

4. .tochatbe-widget__trigger {
border-radius: 2em;
font-size: 18px;
font-weight: bold;
display: flex;
align-items: center;
flex-flow: row;
padding: 0 15px 0 0;
overflow: hidden;
}
.tochatbe-icon-whatsapp {
font-size: 1.5em;
background: #017e00;
padding: 10px 10px 10px 15px;
margin-right: 7px;
}

5. .tochatbe-widget__trigger {
border-radius: 50%;
font-size: 0px;
font-weight: bold;
display: flex;
align-items: center;
flex-flow: row;
padding: 0;
overflow: hidden;
width: 75px;
height: 75px;
justify-content: center;
}
.tochatbe-icon-whatsapp {
font-size: 54px;
padding: 10px;
position: relative;
top: -1px;
}

6. .tochatbe-widget__trigger {
border-radius: 50%;
font-size: 0px;
font-weight: bold;
display: flex;
align-items: center;
flex-flow: row;
padding: 0;
overflow: hidden;
width: 75px;
height: 75px;
justify-content: center;
-webkit-box-shadow: 0px 0px 10px 0px rgba(0,0,0,0.5);
-moz-box-shadow: 0px 0px 10px 0px rgba(0,0,0,0.5);
box-shadow: 0px 0px 10px 0px rgba(0,0,0,0.5);
}
.tochatbe-icon-whatsapp {
font-size: 54px;
padding: 10px;
position: relative;
top: -1px;
}