Add Tenderly Sandbox to IDEs

Per @samajammin's suggestion, I added Tenderly Sandbox to the web-based IDEs section. Also tweaked the link styles a bit to make them cleaner.

Author: emmanuel-awosika

src/content/developers/docs/ides/index.md

@@ -11,22 +11,17 @@ When it comes to setting up an [integrated development environment (IDE)](https:
 
 If you're looking to fiddle with code before you [set up a local development environment](/developers/local-environment/), these web apps are custom-built for Ethereum smart contract development.
 
-**Remix -** **_Web-based IDE with built in static analysis, and a test blockchain virtual machine_**
+**[Remix](https://remix.ethereum.org/)** - **_Web-based IDE with built in static analysis, and a test blockchain virtual machine_**
 
-- [remix.ethereum.org](https://remix.ethereum.org/)
+**[ChainIDE](https://chainide.com/)** - **_A cloud-based multi-chain IDE_**
 
-**EthFiddle -** **_Web-based IDE that lets you write, compile, and debug your smart contract_**
+**[Replit (Solidity Starter)](https://replit.com/@replit/Solidity-starter-beta)** - **_A customizable development environment for Ethereum with hot reloading, error checking, and first-class testnet support_**
 
-- [ethfiddle.com](https://ethfiddle.com/)
-- [Gitter](https://gitter.im/loomnetwork/ethfiddle)
+**[Tenderly Sandbox](https://sandbox.tenderly.co/)** - **_A fast prototyping environment where you can write, execute, and debug smart contracts in the browser using Solidity and JavaScript_**
 
-**ChainIDE -** **_A Cloud-Based Multi-Chain IDE_**
+**[EthFiddle](https://ethfiddle.com/)** - **_Web-based IDE that lets you write, compile, and debug your smart contract_**
 
-- [chainide.com](https://chainide.com/)
-
-**Replit -** **_A customizable development environment for Ethereum with hot reloading, error checking, and first-class testnet support_**
-
-- [Solidity starter](https://replit.com/@replit/Solidity-starter-beta)
+- **[Gitter](https://gitter.im/loomnetwork/ethfiddle)**
 
 ## Desktop IDEs {#desktop-ides}